* support es https ssl config.

* update

* update docs.

* refactoring var name.

* fix

* update docs.

* add config in es section.

* fix logical.

* Support Gateway without agent

* Check license header strictly

* Ignore header template

* Include more files to check list

* support elasticsearch address configuration with http scheme.

* update logical.

* Modify the thread pool of grpc server.

* add license header

* make param confingable

* Add sharing and Jaeger config.

* Remove grpc thread config from yml

* [maven-release-plugin] prepare release v6.3.0

* [maven-release-plugin] prepare for next development iteration

2. Implement the ids query for H2 metrics DAO.

* Improve OAP server performance.

* Fixed the problem of dirty reading of the storage implementation of elasticsearch.

* Fixed a mistake.

* Fix wrong logger name

* Fix more wrong logger names in agent side

* fix deleteIndex repeat append namespace

* fix deleteIndex repeat append namespace

* fix checkStyle

* fix

* fix test assert

* update test method name

* fix test

* fix

* del elastic.search.namespace

* fix check style

* update ITElasticSearchNamespaceClient to ITElasticSearchClientOfNamespace

* move undoFormatIndexName to ITElasticSearchClien

* move #getIndex to ITElasticSearchClient

* add deleteByModelName and deleteByIndexName

* add deleteByModelName and deleteByIndexName

* revert ITElasticSearchClient#getIndex

* Use whitebox get from powermock to get this.

* undo namespacePrefix

* Enhance module manager

* [maven-release-plugin] prepare release v6.2.0

* [maven-release-plugin] prepare for next development iteration

* Use ids query method instead of get method for metrics persistence.

#2933

* Query by alias name.

#2886

* Test

* Sync

* Update ITNacosConfigurationTest.java

* Trigger CI

* Trigger CI

* Trigger CI

* Trigger CI

* Trigger CI

* Remove unused imports to fix checkstyle

* Remove unused imports to fix checkstyle

* Increase timeout since nacos starts slowlly

* Bump up Oracle JDK version

* Remove OracleJDK due to license

* Add CI-with-IT profile and openjdk9

* Add missing profiles

* Lift failsafe plugin to root

* Update pom.xml

* Remove OPENJDK9

* Try parallel builds and add agent

* Try parallel build and windows

* Try parallel build and windows

* Try parallel build and windows

* Try parallel build

* Try parallel build

* Try parallel build

* Fix indentation

* Trigger CI

* Trigger CI

* Remove Windows stage

* Update mvnw.cmd

Get the document by index name.

* Implement the base of config API module.

* Finish configuration module codebases w/o tests, revert some changes.

* Finish mock tests.

* Add new gRPC service for configuration.

* Make gRPC configuration sync provider works.

* Add database slow statement dynamic setting.

* Finish the dynamic configuration service.

* Fix version.

* The new feature of Elasticsearch storage with the time series implementation.

* Time bucket util improve.

* Fixed some Gramma error.

* Update ttl.md

Polish English a little.

* Update ttl.md

Add more explicit description of TTL

* Update ttl.md

* Update StorageModuleElasticsearchConfig.java

Set otherMetricsDataTTL = 0 as default, make user more clear.

* Rename the timeSeriesAble to capableOfTimeSeries

* Fixed a test case failure.

* Rename metric to metrics.

* Fixed test case execute failure issues.

* Move submodule plugin.

* Always auto-submodule

* [maven-release-plugin] prepare release v6.1.0

* [maven-release-plugin] prepare for next development iteration

* Change keys location.

Update all "incubator-skywalking" to "skywalking" ,"incubator-servicecomb-java-chassis" to "servicecomb-java-chassis" correctly, and ".gitmodules" will update at #2531 (#2548)

* Provide elasticsearch template operation method.

* Fixed compile failure issue.

* Integration test for elastic search client.

* Just test verify command.

* CI command order change.

* Remove maven clean.

* no message

* Create Jenkinsfile to try the apache build for our CI.

* Fix missing licenses in dist.

* Move all CoreRegisterLinker together into SharingReceiver.

* Setup receiver endpoint

* Revert "Provide create, delete, isExists template method by elastic client. (#2425)"

This reverts commit e6a7720f.

* Added elasticsearch warehouse certification support

* Add the elasticsearch service for Http Basic instructions

* Update backend-storage.md

Change document.

* #2327

Add a new module for share receiver server or to be a bridge of core server.

* Rename the module name.

* Try adjustment.

* Remove heartbeat.

* Make heartbeat back to work. And default threadpool size more sense.

* Make L2 to less than before.

* Make instance heartbeat works.

* Try L1 aggregation thread = core * 2 * 2.

[Performance Improvement]Backend streaming thread model improvement

* 1. Sleep 500 milliseconds after a batch re-call finish.
2. Re-create register lock index when the system property named debug is setting.
3. Get the register inventory before lock to avoid increment the sequence but not use.
4. Return the exchange flag after all the references and spans in one segment parsed to reduce the number of segment parse.
5. Put the not exchanged segment into a collection then try to exchange no more than 10 times because of the exchange is asynchronous.
6. Cache the segment object to avoid repeated deserialization.

#2185

* #2185
1. Sleep 500 milliseconds after a batch re-call finish.
2. Re-create register lock index when the system property named debug is setting.
3. Get the register inventory before lock to avoid increment the sequence but not use.

* [maven-release-plugin] prepare release v6.0.0-GA

* [maven-release-plugin] prepare for next development iteration

* fixed  the index name to format name in logs

* modify the log level from info to debug