[JEP-222] Add experimental WebSocket support + Jetty update in Winstone + Remoting 4.0 - #1

* Try to execute flyweight tasks on the master

* Fix offline behavior, add tests

* Remove obsolete TODOs, also check #isAcceptingTasks

[JENKINS-59793] Avoid hanging jobs with faulty SubTasks

The jenkins-slave.xml file has been copied to the windows-slave-installer-module,
but a unused (old) copy is still present in the jenkins core.

…pane of the Plugin Manager (#4298)

* refs #JENKINS-59665 Fixed sorting for uninstall column of installed in plugin manager

* refs #JENKINS-59665 removed test attribute

* Hide password form fields by default

* Trying to bypass enforced autocompletion by just having a test field at first

Something like onfocus didn't work, you'd tab through form elements
and unless you filled in the user name, changing the form field to
password would cause it to autocomplete.

It looks like, at least in Mac/Firefox, going from plain text to password
in the 'oninput' event handler works. The plain text is revealed neither
with typing nor pasting.

* Update core/src/main/resources/lib/form/password.jelly

Co-Authored-By: daniel-beck <daniel-beck@users.noreply.github.com>

* Use previously defined value

* Make new password form fields opt-out

* Add support for redacting form secrets in new password field

* Have a password value pre-set in Jelly

* Fix method

* Fix test by clicking on the button to change the password

* Forgot period separator between class and property name

[JENKINS-59508] Sidebar links show full label on hover

Switch from maven-jenkins-dev-plugin to upstream jetty-maven-plugin

Add StandardOpenOption.CREATE flag to create FileChannelWriter to avoid full fs flush and 5sec log operation on creating empty file with CephFS as a storage

* JENKINS-6722 Show slave error status on Dashboard

* Update executors.properties

…unds on the plugin side (#3935)

* JENKINS-56553 Make proxy config compatible with JCASC

* Use DataBoundSetters as other fields are optional

* Fix Jelly for ProxyConfiguration

* Use default field name now that field matches

* Fix validate proxy

* Change field type

* After review

* Update core/src/main/java/jenkins/model/Jenkins.java

Co-Authored-By: timja <t.jacomb@kainos.com>

* Update core/src/main/java/jenkins/model/Jenkins.java

Co-Authored-By: timja <t.jacomb@kainos.com>

* Update core/src/main/java/hudson/ProxyConfiguration.java

Co-Authored-By: timja <t.jacomb@kainos.com>

* Update core/src/main/java/jenkins/model/Jenkins.java

Co-Authored-By: timja <t.jacomb@kainos.com>

* Update core/src/main/java/jenkins/model/Jenkins.java

Co-Authored-By: timja <t.jacomb@kainos.com>

* Update core/src/main/java/hudson/ProxyConfiguration.java

Co-Authored-By: Oleg Nenashev <o.v.nenashev@gmail.com>

* Tweak javadoc

* Align fields

* Update core/src/main/java/hudson/ProxyConfiguration.java

Co-Authored-By: Adrien Lecharpentier <adrien.lecharpentier@gmail.com>

Document workaround for Stapler data binding bug in repeatableProperty

…ling events (#4345)

* Rejuvenate log levels

* clean up

* Reverting the plugin download

Co-Authored-By: Oleg Nenashev <o.v.nenashev@gmail.com>

[JENKINS-42658] - Fix NPE in Agent API when the agent is offline (e.g. retrieving agent version or OS description)

Inlining test-pom into test and removing test-jdk8

…IZABLE, ES_COMPARING_STRINGS_WITH_EQ) (#4379)

* fixed Spotbugs issues (SE_COMPARATOR_SHOULD_BE_SERIALIZABLE, ES_COMPARING_STRINGS_WITH_EQ)

* replaced wildcard import with specific imports

* added missing import

* fixed spotbugs issues

* removed accidently added import

…stages (#4207)

* [JENKINS-59412] Clarify that build history does not include pipeline stages

* Clarify that pipelines are merely an example of tasks that may not be listed

Simplify CoreUpdateMonitor/message.properties: changelog.url → jenkins-version.properties

* Add the maintainer checklist to the pull request template

* Add checklist items for LTS

* Add "Proposed changelog entries" to the pull request template

* Pull request template: `Internal: ` prefix is now added automatically by the Core Changelog generator

jenkinsci/core-changelog-generator#6

* Apply suggestions from review by @MarkEWaite

Co-Authored-By: Mark Waite <mark.earl.waite@gmail.com>

Co-authored-by: Mark Waite <mark.earl.waite@gmail.com>

Upload draft Changelog YAMLs to GitHub Release assets

…or-yaml

Revert "Upload draft Changelog YAMLs to GitHub Release assets"

…g YAMLs to Release Drafter

…draft

… release metadata

[JENKINS-60740] - Rely on GitHub Actions to generate the release draft YAMLs

Release Drafter Fix: Properly inherit the parent config

[JENKINS-60716] Retain causes of a LogRotator failure for diagnosis

* Spotbugs: Fixed comparing strings with equals instead of ==

* Spotbugs: Do not return null in @nonnull marked method, instead return empty string.

* Added Suppress for Spotbugs

* Apply suggestions from code review

Co-Authored-By: Oleg Nenashev <o.v.nenashev@gmail.com>

* fixed javadoc

Co-authored-by: Oleg Nenashev <o.v.nenashev@gmail.com>