* [JENKINS-38903] Split Exception handling for node provision and adding to Jenkins

* Defined new static helper methods that ensure exceptions are not propagated

* Added onCommit and onRollback signals to CloudProvisioningListener

Added the new signals to be able to notify the state after Jenkins.addNode(Node)
All Listener's calls moved to an exception-tolerant static helpers

* Added @Nonnull annotation
Changed the method signature CloudProvisioningListener.onRollback()

* Re-throw Error in the fireOnXXX()
Removed re-thrown Throwable in the main try/catch block
	(an instance of the Error is handled separately)

* Handling of Error changed

* Fixed Error instance handling in NodeProvisioner.fireOnFailure()

[FIXED JENKINS-40286] - Delegate JnlpMac computation to SlaveComputers if possible

[FIX JENKINS-40053]: Use english as default-locale ResourceBundleUtilTest#test_unknown_locale (#2650)

* [FIX JENKINS-40053]: Use english as default-locale, so the ResourceBundleUtilTest runs also on systems with other default os locales.

* [FIX JENKINS-40053]: Cleanup Locale after test to avoid impact on other tests.

*  [FIX JENKINS-40053]: Use english as default-locale only in the required test method.

* [FIX JENKINS-40053]: Cleanup unused imports.

[FIX JENKINS-28245] - Allow defining agent ping interval and ping timeout in seconds

[FIX JENKINS-39700] Don't fail when no parameters property for job

[JENKINS-39300] View.getDisplayName() is ignored when rendering tabs

[JENKINS-40281] Do not try to mutate the result of getActions(Class)

* [FIX JENKINS-36044]: Added default locale to XMLUtilsTest so that it runs independent from the host OS locale.

* [FIX JENKINS-36044]: Cleanup default-locale after test, to avoid impact to other tests.

*  [FIX JENKINS-36044]: Make test language indepedent.

* [FIX JENKINS-36044]: Cleanup unused imports.

Annotate localizer generated Messages classes with NoExternalUse

Test plugin wrapper

* Make sure Security218BlackBoxTest cleans up threads it starts.

* Some code simplifications, and possible leak fixes, based on CLI now being AutoCloseable.

* Obsolete comment.

* Converted to JenkinsRule.

* Improved messages from Node.canTake.

* [FIXED JENKINS-38514] BuildableItem needs to retain information from JobOffer about why it is neither blocked nor building.

* Converted to JenkinsRule.

* Found an existing usage of BecauseNodeIsNotAcceptingTasks.

* Original JENKINS-6598 test was checking behavior we want amended by JENKINS-38514.

* Ensure that a BuildableItem which is simply waiting for a free executor reports that as its CauseOfBlockage.

* Review comments from @oleg-nenashev.

- This means we can default the migration to enabled

UserProperty may contain nested objects that depend on User. 
On User reconfiguration setUser(User) is called so it should be non-final to have ability override it and update references in nested objects.
Signed-off-by: NKanstantsin Shautsou <kanstantsin.sha@gmail.com>

Also update to localizer 1.24 which adds support for this.

[JENKINS-23271] - Process statuses of Remote process join() operations directly inside methods (#2653)

* [JENKINS-23271] - Process statuses of Remote process join() operations directly inside methods

* [JENKINS-23271] - Also prevent the issue when the kill() command is the last call in the usage sequence

Clarify hudson.Extension#ordinal documentation

I have to read it many times each time I need it. Hopefully
it's a bit clearer with this addition.

[JENKINS-28245] - Finish deadmoose's work to allow defining agent ping interval and ping timeout in seconds

 * Allows customization in seconds, not minutes
 * Allows customization of the ping timeout (before, you could set a
   custom interval, but the timeout would always be PingThread's 4
   minute default)

This also drops the serialVersionUID from ChannelPinger.SetUpRemotePing;
without one provided, the JVM will generate one on demand which is
sufficient for the purposes here since these are never persisted and
master & slave run the same compiled code. (And it demonstrably works
since countless other MasterToSlaveCallables fail to specify their own
custom IDs)

Be able to specify the log Level when system property is not found