Remove the broken packaging testing temporarily

[FIX JENKINS-38391] Show admin monitors on most URLs

* [FIX JENKINS-18114] Exclude /cli URL from crumb requirement

* [JENKINS-18114] Fix test: Don't send the crumb

The CLI doesn't do this either.

[JENKINS-32148] - Add :hover to all stripped table rows

- Add tooltip to notification button
- Move CSS/JS into an adjunct
- Check adcitve admin monitors status last
- Don't show on /configure URL

This code can come back, IMO, after @svanoort and I fix the unpleasant/broken
tight-coupling between this Jenkinsfile and Groovy code floating around in the
jenkinsci/packaging repository

This needs to be reworked a bit to accomodate more modern versions of Jenkins
Pipeline

* [JENKINS-35184] Servlet API dependent bits in a inner-class

This is in order to avoid loading ServletContextListener class
from slaves classloader.

* [JENKINS-35184] Don't use SystemProperties while initializing remote agents

This rolls back the previous commit and introduces a new way to construct
RingBufferLogHandler which avoids relying on SystemProperties to get the
default size.

* [JENKINS-35184] Mark SystemProperties as OnMaster only class

Adding `OnMaster` annotation does not prevent the class from being
loaded on remote agent but it gives a hint that this class should not
be used on a remote agent.

* [JENKINS-35184] Set SLAVE_LOG_HANDLER at the very beginning

In the previous code cleaning existing log handlers, SLAVE_LOG_HANDLER
is always null, as static fields are scoped by classloader.

Present stacktrace when throwable attached to Descriptor.FormException

[FIX JENKINS-38301] Add configuration for disabling admin monitors

Let Maven decide the appropriate amount of concurrency

There were two issues preventing the build history from updating properly:
1) The next build number being fetched wasn't taking into account running builds, so any builds already running when the page is refreshed would be ignored. The fix was to use nextBuildNumberToFetch if it is available (which is the case if there are running builds) and to fall back to the next build otherwise.
2) The first transient build key (used to clear out builds from the history that are being updated) wasn't being set when the page first loads. This was fixed by making getHistoryPageFilter calculate the value so that it happens in all cases rather than just during the ajax call.

* [JENKINS-10912] Use setInterval in refreshPart

The current implementation of refreshPart creates a new closure every 5
seconds, which, in combination with XMLHttpRequest objects, results in a
significant memory leak in all major browsers. By using
window.setInterval to schedule periodic refreshes, only one closure per
id is created. Please see issue #10912 in the Jenkins tracker for
further details.

* Stop periodical calls if we can't find the div

* Don't check if isRunAsTest changed after page load

Add display name for all admin monitors in core.

* [JENKINS-37857] Prompt user whether to add the job to the current view

* [JENKINS-37857] Fix review items from @daniel-beck

* [FIXED JENKINS-37731] Change symbol and constructor for SCMTrigger.

Using "scm" as the @Symbol led to collisions with the "scm" global
variable in Pipeline, so that had to go. Changed it to "pollScm". Also
moved the @DataBoundConstructor to the single-parameter constructor,
deprecated the two-parameter constructor, created a @DataBoundSetter
for ignorePostCommitHooks, and added a getter for "scmpoll_spec" to
fix snippet generator and general syntactic goodness.

So now, with this, it's possible to do:

properties([
  pipelineTriggers([
    pollScm('@daily')
  ])
])

Tada.

Tests for the snippet generator and job property stuff will be landing
in a separate PR for workflow-multibranch.

* Review comments.

* Updating @since to 2.22

For example when Descriptor was defined as field and without @Extension .

Signed-off-by: Kanstantsin Shautsou <kanstantsin.sha@gmail.com>