* [JENKINS-47439] Add a failing test

On first startup, the setup wizard goes into state NEW and the filter to
force display the setup wizard is installed.

On second startup, the setup wizard goes into state RESTART (which
assumes the setup wizard is done), and the setup wizard is skipped
completely.

This test expects that state NEW is retained upon restart when nothing
is done.

* [JENKINS-47439] Persist InstallState

In some cases, the heuristics to determine the current setup wizard state are
fragile. It is safer to persist the install state so that upon restart,
the setup wizard can resume where it was left off.

* Missing javadoc and since for new public methods

* s/XXX/FIXME/

* Missed that one

* Setup wizard filter should be removed when entering a state where setup is complete

* Use parameterized logging

* Improvements over previous impl

* Removed static isUsingSecurityToken. Now only determined from install
state.
* Call onInstallStateUpdate before InstallState#initializeState as the
latter can update state.

* Triggering a new build

Updating Powermock and Objenesis to avoid Mockito/Hamcrest library mismatches

[FIXED JENKINS-25286] Export assignedLabels for agents and jobs in JSON and XML APIs

[JENKINS-27026] - Update SSHD Module from 2.0 to 2.3 

[JENKINS-20474] Optimize away ACL construction and AuthorizationStrategy calls when checking permissions for SYSTEM

GMaven cleanup

surefire.skipAfterFailureCount=100

Deleting GroovyTest, which only tested the ability to write Jenkins tests in Groovy, not Jenkins itself.

Deleting ancient cobertura profile, which was broken at least by Java 8 if not earlier. If we want code coverage we can use JaCoCo as plugin-pom does.