This commit updates URLs to prefer the https protocol. Redirects are not followed to avoid accidentally expanding intentionally shortened URLs (i.e. if using a URL shortener).

These URLs were unable to be fixed. Please review them to see if they can be manually resolved.

* [ ] http://castor.org/mapping.dtd (301) with 1 occurrences could not be migrated:
   ([https](https://castor.org/mapping.dtd) result AnnotatedConnectException).
* [ ] http://mydomain2.com (302) with 2 occurrences could not be migrated:
   ([https](https://mydomain2.com) result ConnectTimeoutException).
* [ ] http://www.foo.com/schema/component/component.xsd (404) with 1 occurrences could not be migrated:
   ([https](https://www.foo.com/schema/component/component.xsd) result SSLHandshakeException).

These URLs were fixed, but the https status was not OK. However, the https status was the same as the http request or http redirected to an https URL, so they were migrated. Your review is recommended.

* [ ] http://www.kbcafe.com/rss/atom.xsd.xml (ConnectTimeoutException) with 1 occurrences migrated to:
  https://www.kbcafe.com/rss/atom.xsd.xml ([https](https://www.kbcafe.com/rss/atom.xsd.xml) result ConnectTimeoutException).
* [ ] http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd (ReadTimeoutException) with 5 occurrences migrated to:
  https://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd ([https](https://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd) result ReadTimeoutException).
* [ ] http://domain1.com (UnknownHostException) with 2 occurrences migrated to:
  https://domain1.com ([https](https://domain1.com) result UnknownHostException).
* [ ] http://domain2.com (UnknownHostException) with 1 occurrences migrated to:
  https://domain2.com ([https](https://domain2.com) result UnknownHostException).
* [ ] http://mydomain1.com,http://mydomain2.com (UnknownHostException) with 1 occurrences migrated to:
  https://mydomain1.com,http://mydomain2.com ([https](https://mydomain1.com,https://mydomain2.com) result UnknownHostException).
* [ ] http://mydomain3.com,http://mydomain4.com (UnknownHostException) with 1 occurrences migrated to:
  https://mydomain3.com,http://mydomain4.com ([https](https://mydomain3.com,https://mydomain4.com) result UnknownHostException).
* [ ] http://www.springframework.org/schema/beans/factory/xml/support/CustomNamespaceHandlerTests.xsd (404) with 1 occurrences migrated to:
  https://www.springframework.org/schema/beans/factory/xml/support/CustomNamespaceHandlerTests.xsd ([https](https://www.springframework.org/schema/beans/factory/xml/support/CustomNamespaceHandlerTests.xsd) result 404).

These URLs were switched to an https URL with a 2xx status. While the status was successful, your review is still recommended.

* [ ] http://example.com with 1 occurrences migrated to:
  https://example.com ([https](https://example.com) result 200).
* [ ] http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd (301) with 2 occurrences migrated to:
  https://hibernate.org/dtd/hibernate-mapping-3.0.dtd ([https](https://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd) result 200).
* [ ] http://testng.org/testng-1.0.dtd with 3 occurrences migrated to:
  https://testng.org/testng-1.0.dtd ([https](https://testng.org/testng-1.0.dtd) result 200).
* [ ] http://tiles.apache.org/dtds/tiles-config_2_0.dtd with 2 occurrences migrated to:
  https://tiles.apache.org/dtds/tiles-config_2_0.dtd ([https](https://tiles.apache.org/dtds/tiles-config_2_0.dtd) result 200).
* [ ] http://tiles.apache.org/dtds/tiles-config_2_1.dtd with 2 occurrences migrated to:
  https://tiles.apache.org/dtds/tiles-config_2_1.dtd ([https](https://tiles.apache.org/dtds/tiles-config_2_1.dtd) result 200).
* [ ] http://tiles.apache.org/dtds/tiles-config_3_0.dtd with 4 occurrences migrated to:
  https://tiles.apache.org/dtds/tiles-config_3_0.dtd ([https](https://tiles.apache.org/dtds/tiles-config_3_0.dtd) result 200).
* [ ] http://www.quartz-scheduler.org/xml/job_scheduling_data_1_8.xsd with 1 occurrences migrated to:
  https://www.quartz-scheduler.org/xml/job_scheduling_data_1_8.xsd ([https](https://www.quartz-scheduler.org/xml/job_scheduling_data_1_8.xsd) result 200).
* [ ] http://www.springframework.org/dtd/spring-beans-2.0.dtd with 176 occurrences migrated to:
  https://www.springframework.org/dtd/spring-beans-2.0.dtd ([https](https://www.springframework.org/dtd/spring-beans-2.0.dtd) result 200).
* [ ] http://www.springframework.org/schema/aop/spring-aop-2.0.xsd with 68 occurrences migrated to:
  https://www.springframework.org/schema/aop/spring-aop-2.0.xsd ([https](https://www.springframework.org/schema/aop/spring-aop-2.0.xsd) result 200).
* [ ] http://www.springframework.org/schema/aop/spring-aop-2.5.xsd with 11 occurrences migrated to:
  https://www.springframework.org/schema/aop/spring-aop-2.5.xsd ([https](https://www.springframework.org/schema/aop/spring-aop-2.5.xsd) result 200).
* [ ] http://www.springframework.org/schema/aop/spring-aop-3.0.xsd with 2 occurrences migrated to:
  https://www.springframework.org/schema/aop/spring-aop-3.0.xsd ([https](https://www.springframework.org/schema/aop/spring-aop-3.0.xsd) result 200).
* [ ] http://www.springframework.org/schema/aop/spring-aop.xsd with 7 occurrences migrated to:
  https://www.springframework.org/schema/aop/spring-aop.xsd ([https](https://www.springframework.org/schema/aop/spring-aop.xsd) result 200).
* [ ] http://www.springframework.org/schema/beans/spring-beans-2.0.xsd with 112 occurrences migrated to:
  https://www.springframework.org/schema/beans/spring-beans-2.0.xsd ([https](https://www.springframework.org/schema/beans/spring-beans-2.0.xsd) result 200).
* [ ] http://www.springframework.org/schema/beans/spring-beans-2.5.xsd with 46 occurrences migrated to:
  https://www.springframework.org/schema/beans/spring-beans-2.5.xsd ([https](https://www.springframework.org/schema/beans/spring-beans-2.5.xsd) result 200).
* [ ] http://www.springframework.org/schema/beans/spring-beans-3.0.xsd with 10 occurrences migrated to:
  https://www.springframework.org/schema/beans/spring-beans-3.0.xsd ([https](https://www.springframework.org/schema/beans/spring-beans-3.0.xsd) result 200).
* [ ] http://www.springframework.org/schema/beans/spring-beans-3.1.xsd with 33 occurrences migrated to:
  https://www.springframework.org/schema/beans/spring-beans-3.1.xsd ([https](https://www.springframework.org/schema/beans/spring-beans-3.1.xsd) result 200).
* [ ] http://www.springframework.org/schema/beans/spring-beans-3.2.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/beans/spring-beans-3.2.xsd ([https](https://www.springframework.org/schema/beans/spring-beans-3.2.xsd) result 200).
* [ ] http://www.springframework.org/schema/beans/spring-beans-4.0.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/beans/spring-beans-4.0.xsd ([https](https://www.springframework.org/schema/beans/spring-beans-4.0.xsd) result 200).
* [ ] http://www.springframework.org/schema/beans/spring-beans-4.1.xsd with 3 occurrences migrated to:
  https://www.springframework.org/schema/beans/spring-beans-4.1.xsd ([https](https://www.springframework.org/schema/beans/spring-beans-4.1.xsd) result 200).
* [ ] http://www.springframework.org/schema/beans/spring-beans-4.2.xsd with 4 occurrences migrated to:
  https://www.springframework.org/schema/beans/spring-beans-4.2.xsd ([https](https://www.springframework.org/schema/beans/spring-beans-4.2.xsd) result 200).
* [ ] http://www.springframework.org/schema/beans/spring-beans-4.3.xsd with 4 occurrences migrated to:
  https://www.springframework.org/schema/beans/spring-beans-4.3.xsd ([https](https://www.springframework.org/schema/beans/spring-beans-4.3.xsd) result 200).
* [ ] http://www.springframework.org/schema/beans/spring-beans.xsd with 142 occurrences migrated to:
  https://www.springframework.org/schema/beans/spring-beans.xsd ([https](https://www.springframework.org/schema/beans/spring-beans.xsd) result 200).
* [ ] http://www.springframework.org/schema/cache/spring-cache.xsd with 10 occurrences migrated to:
  https://www.springframework.org/schema/cache/spring-cache.xsd ([https](https://www.springframework.org/schema/cache/spring-cache.xsd) result 200).
* [ ] http://www.springframework.org/schema/context/spring-context-2.5.xsd with 41 occurrences migrated to:
  https://www.springframework.org/schema/context/spring-context-2.5.xsd ([https](https://www.springframework.org/schema/context/spring-context-2.5.xsd) result 200).
* [ ] http://www.springframework.org/schema/context/spring-context-3.0.xsd with 2 occurrences migrated to:
  https://www.springframework.org/schema/context/spring-context-3.0.xsd ([https](https://www.springframework.org/schema/context/spring-context-3.0.xsd) result 200).
* [ ] http://www.springframework.org/schema/context/spring-context-3.1.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/context/spring-context-3.1.xsd ([https](https://www.springframework.org/schema/context/spring-context-3.1.xsd) result 200).
* [ ] http://www.springframework.org/schema/context/spring-context-3.2.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/context/spring-context-3.2.xsd ([https](https://www.springframework.org/schema/context/spring-context-3.2.xsd) result 200).
* [ ] http://www.springframework.org/schema/context/spring-context-4.0.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/context/spring-context-4.0.xsd ([https](https://www.springframework.org/schema/context/spring-context-4.0.xsd) result 200).
* [ ] http://www.springframework.org/schema/context/spring-context-4.2.xsd with 4 occurrences migrated to:
  https://www.springframework.org/schema/context/spring-context-4.2.xsd ([https](https://www.springframework.org/schema/context/spring-context-4.2.xsd) result 200).
* [ ] http://www.springframework.org/schema/context/spring-context-4.3.xsd with 2 occurrences migrated to:
  https://www.springframework.org/schema/context/spring-context-4.3.xsd ([https](https://www.springframework.org/schema/context/spring-context-4.3.xsd) result 200).
* [ ] http://www.springframework.org/schema/context/spring-context.xsd with 10 occurrences migrated to:
  https://www.springframework.org/schema/context/spring-context.xsd ([https](https://www.springframework.org/schema/context/spring-context.xsd) result 200).
* [ ] http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd with 9 occurrences migrated to:
  https://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd ([https](https://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd) result 200).
* [ ] http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd with 5 occurrences migrated to:
  https://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd ([https](https://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd) result 200).
* [ ] http://www.springframework.org/schema/jdbc/spring-jdbc-4.2.xsd with 9 occurrences migrated to:
  https://www.springframework.org/schema/jdbc/spring-jdbc-4.2.xsd ([https](https://www.springframework.org/schema/jdbc/spring-jdbc-4.2.xsd) result 200).
* [ ] http://www.springframework.org/schema/jdbc/spring-jdbc-4.3.xsd with 2 occurrences migrated to:
  https://www.springframework.org/schema/jdbc/spring-jdbc-4.3.xsd ([https](https://www.springframework.org/schema/jdbc/spring-jdbc-4.3.xsd) result 200).
* [ ] http://www.springframework.org/schema/jdbc/spring-jdbc.xsd with 8 occurrences migrated to:
  https://www.springframework.org/schema/jdbc/spring-jdbc.xsd ([https](https://www.springframework.org/schema/jdbc/spring-jdbc.xsd) result 200).
* [ ] http://www.springframework.org/schema/jee/spring-jee-3.1.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/jee/spring-jee-3.1.xsd ([https](https://www.springframework.org/schema/jee/spring-jee-3.1.xsd) result 200).
* [ ] http://www.springframework.org/schema/jms/spring-jms-4.1.xsd with 9 occurrences migrated to:
  https://www.springframework.org/schema/jms/spring-jms-4.1.xsd ([https](https://www.springframework.org/schema/jms/spring-jms-4.1.xsd) result 200).
* [ ] http://www.springframework.org/schema/jms/spring-jms-4.2.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/jms/spring-jms-4.2.xsd ([https](https://www.springframework.org/schema/jms/spring-jms-4.2.xsd) result 200).
* [ ] http://www.springframework.org/schema/lang/spring-lang-2.0.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/lang/spring-lang-2.0.xsd ([https](https://www.springframework.org/schema/lang/spring-lang-2.0.xsd) result 200).
* [ ] http://www.springframework.org/schema/lang/spring-lang-2.5.xsd with 3 occurrences migrated to:
  https://www.springframework.org/schema/lang/spring-lang-2.5.xsd ([https](https://www.springframework.org/schema/lang/spring-lang-2.5.xsd) result 200).
* [ ] http://www.springframework.org/schema/lang/spring-lang-3.0.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/lang/spring-lang-3.0.xsd ([https](https://www.springframework.org/schema/lang/spring-lang-3.0.xsd) result 200).
* [ ] http://www.springframework.org/schema/lang/spring-lang-3.1.xsd with 5 occurrences migrated to:
  https://www.springframework.org/schema/lang/spring-lang-3.1.xsd ([https](https://www.springframework.org/schema/lang/spring-lang-3.1.xsd) result 200).
* [ ] http://www.springframework.org/schema/lang/spring-lang-4.2.xsd with 2 occurrences migrated to:
  https://www.springframework.org/schema/lang/spring-lang-4.2.xsd ([https](https://www.springframework.org/schema/lang/spring-lang-4.2.xsd) result 200).
* [ ] http://www.springframework.org/schema/lang/spring-lang.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/lang/spring-lang.xsd ([https](https://www.springframework.org/schema/lang/spring-lang.xsd) result 200).
* [ ] http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd ([https](https://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd) result 200).
* [ ] http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd with 2 occurrences migrated to:
  https://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd ([https](https://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd) result 200).
* [ ] http://www.springframework.org/schema/mvc/spring-mvc.xsd with 26 occurrences migrated to:
  https://www.springframework.org/schema/mvc/spring-mvc.xsd ([https](https://www.springframework.org/schema/mvc/spring-mvc.xsd) result 200).
* [ ] http://www.springframework.org/schema/oxm/spring-oxm.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/oxm/spring-oxm.xsd ([https](https://www.springframework.org/schema/oxm/spring-oxm.xsd) result 200).
* [ ] http://www.springframework.org/schema/task/spring-task-4.1.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/task/spring-task-4.1.xsd ([https](https://www.springframework.org/schema/task/spring-task-4.1.xsd) result 200).
* [ ] http://www.springframework.org/schema/task/spring-task.xsd with 6 occurrences migrated to:
  https://www.springframework.org/schema/task/spring-task.xsd ([https](https://www.springframework.org/schema/task/spring-task.xsd) result 200).
* [ ] http://www.springframework.org/schema/tx/spring-tx-2.5.xsd with 3 occurrences migrated to:
  https://www.springframework.org/schema/tx/spring-tx-2.5.xsd ([https](https://www.springframework.org/schema/tx/spring-tx-2.5.xsd) result 200).
* [ ] http://www.springframework.org/schema/tx/spring-tx-4.0.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/tx/spring-tx-4.0.xsd ([https](https://www.springframework.org/schema/tx/spring-tx-4.0.xsd) result 200).
* [ ] http://www.springframework.org/schema/tx/spring-tx.xsd with 2 occurrences migrated to:
  https://www.springframework.org/schema/tx/spring-tx.xsd ([https](https://www.springframework.org/schema/tx/spring-tx.xsd) result 200).
* [ ] http://www.springframework.org/schema/util/spring-util-2.0.xsd with 2 occurrences migrated to:
  https://www.springframework.org/schema/util/spring-util-2.0.xsd ([https](https://www.springframework.org/schema/util/spring-util-2.0.xsd) result 200).
* [ ] http://www.springframework.org/schema/util/spring-util-2.5.xsd with 2 occurrences migrated to:
  https://www.springframework.org/schema/util/spring-util-2.5.xsd ([https](https://www.springframework.org/schema/util/spring-util-2.5.xsd) result 200).
* [ ] http://www.springframework.org/schema/util/spring-util-3.0.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/util/spring-util-3.0.xsd ([https](https://www.springframework.org/schema/util/spring-util-3.0.xsd) result 200).
* [ ] http://www.springframework.org/schema/util/spring-util-3.1.xsd with 2 occurrences migrated to:
  https://www.springframework.org/schema/util/spring-util-3.1.xsd ([https](https://www.springframework.org/schema/util/spring-util-3.1.xsd) result 200).
* [ ] http://www.springframework.org/schema/util/spring-util-4.1.xsd with 1 occurrences migrated to:
  https://www.springframework.org/schema/util/spring-util-4.1.xsd ([https](https://www.springframework.org/schema/util/spring-util-4.1.xsd) result 200).
* [ ] http://www.springframework.org/schema/util/spring-util-4.2.xsd with 4 occurrences migrated to:
  https://www.springframework.org/schema/util/spring-util-4.2.xsd ([https](https://www.springframework.org/schema/util/spring-util-4.2.xsd) result 200).
* [ ] http://www.springframework.org/schema/util/spring-util.xsd with 2 occurrences migrated to:
  https://www.springframework.org/schema/util/spring-util.xsd ([https](https://www.springframework.org/schema/util/spring-util.xsd) result 200).
* [ ] http://www.springframework.org/schema/websocket/spring-websocket.xsd with 11 occurrences migrated to:
  https://www.springframework.org/schema/websocket/spring-websocket.xsd ([https](https://www.springframework.org/schema/websocket/spring-websocket.xsd) result 200).
* [ ] http://www.w3.org/1999/02/22-rdf-syntax-ns with 2 occurrences migrated to:
  https://www.w3.org/1999/02/22-rdf-syntax-ns ([https](https://www.w3.org/1999/02/22-rdf-syntax-ns) result 200).
* [ ] http://mydomain1.com with 2 occurrences migrated to:
  https://mydomain1.com ([https](https://mydomain1.com) result 301).
* [ ] http://www.springframework.org with 1 occurrences migrated to:
  https://www.springframework.org ([https](https://www.springframework.org) result 301).
* [ ] http://help.sap.com/saphelp_hanaplatform/helpdata/en/20/a78d3275191014b41bae7c4a46d835/content.htm with 1 occurrences migrated to:
  https://help.sap.com/saphelp_hanaplatform/helpdata/en/20/a78d3275191014b41bae7c4a46d835/content.htm ([https](https://help.sap.com/saphelp_hanaplatform/helpdata/en/20/a78d3275191014b41bae7c4a46d835/content.htm) result 302).
* [ ] http://java.sun.com/xml/ns/j2ee/connector_1_5.xsd with 1 occurrences migrated to:
  https://java.sun.com/xml/ns/j2ee/connector_1_5.xsd ([https](https://java.sun.com/xml/ns/j2ee/connector_1_5.xsd) result 302).
* [ ] http://java.sun.com/xml/ns/javaee/web-fragment_3_0.xsd with 1 occurrences migrated to:
  https://java.sun.com/xml/ns/javaee/web-fragment_3_0.xsd ([https](https://java.sun.com/xml/ns/javaee/web-fragment_3_0.xsd) result 302).
* [ ] http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd with 12 occurrences migrated to:
  https://java.sun.com/xml/ns/persistence/persistence_1_0.xsd ([https](https://java.sun.com/xml/ns/persistence/persistence_1_0.xsd) result 302).
* [ ] http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd with 1 occurrences migrated to:
  https://java.sun.com/xml/ns/persistence/persistence_2_0.xsd ([https](https://java.sun.com/xml/ns/persistence/persistence_2_0.xsd) result 302).
* [ ] http://purl.org/dc/dcmitype/StillImage with 2 occurrences migrated to:
  https://purl.org/dc/dcmitype/StillImage ([https](https://purl.org/dc/dcmitype/StillImage) result 302).

These URLs were intentionally ignored.

* http://creativecommons.org/ns with 2 occurrences
* http://java.sun.com/dtd/properties.dtd with 4 occurrences
* http://java.sun.com/xml/ns/j2ee with 2 occurrences
* http://java.sun.com/xml/ns/javaee with 2 occurrences
* http://java.sun.com/xml/ns/persistence with 27 occurrences
* http://localhost:8080 with 3 occurrences
* http://purl.org/dc/elements/1.1/ with 2 occurrences
* http://samples.springframework.org/flight with 7 occurrences
* http://schemas.microsoft.com/visio/2003/SVGExtensions/ with 7 occurrences
* http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd with 2 occurrences
* http://www.foo.com/schema/component with 2 occurrences
* http://www.greeting.com/goodbye/ with 1 occurrences
* http://www.greeting.com/hello/ with 1 occurrences
* http://www.inkscape.org/namespaces/inkscape with 2 occurrences
* http://www.quartz-scheduler.org/xml/JobSchedulingData with 2 occurrences
* http://www.springframework.org/schema/aop with 176 occurrences
* http://www.springframework.org/schema/beans with 715 occurrences
* http://www.springframework.org/schema/beans/test with 2 occurrences
* http://www.springframework.org/schema/c with 9 occurrences
* http://www.springframework.org/schema/cache with 20 occurrences
* http://www.springframework.org/schema/context with 126 occurrences
* http://www.springframework.org/schema/jdbc with 66 occurrences
* http://www.springframework.org/schema/jee with 2 occurrences
* http://www.springframework.org/schema/jms with 20 occurrences
* http://www.springframework.org/schema/lang with 27 occurrences
* http://www.springframework.org/schema/mvc with 58 occurrences
* http://www.springframework.org/schema/oxm with 2 occurrences
* http://www.springframework.org/schema/p with 16 occurrences
* http://www.springframework.org/schema/task with 14 occurrences
* http://www.springframework.org/schema/tx with 12 occurrences
* http://www.springframework.org/schema/util with 28 occurrences
* http://www.springframework.org/schema/websocket with 22 occurrences
* http://www.w3.org/2000/svg with 9 occurrences
* http://www.w3.org/2001/XMLSchema-instance with 375 occurrences
* http://www.w3.org/2005/Atom with 2 occurrences

Closes gh-22669

This commit also removes support code for outdated options which were only available in older schema versions.

Issue: SPR-13499

Issue: SPR-12766

This commit eliminates the 'integration-tests' subproject in favor of
managing these sources under the root project's own 'src' directory.

This helps to avoid special-case handling for integration-tests in the
Gradle build, e.g. avoiding publication of jars to Artifactory /
Maven Central.

It is also semantically more correct. This is not a Spring Framework
subproject so much as it is a collection of integration tests that
span functionality across many subprojects. In this way, it makes
sense to place them directly under the root project.

Issue: SPR-8116