make POST requests when checking AbstractCommandInstaller.command

(cherry picked from commit 016fa37a)

[JENKINS-47448] Fix JDKInstaller for downloads requiring an Oracle login

(cherry picked from commit 136fe825)

- fixed by stripping off DelegatedComputerLaunchers and
  ComputerLauncherFilters when rendering slave-agent.jnlp

(cherry picked from commit 257cc238)

[FIXED JENKINS-46659] Avoid Jetty timeouts by sending a ping-like packet every 10s while a CLI command is running.

(cherry picked from commit dc06c3f0)

* [JENKINS-46680] Reproduce in unittest

* [FIX JENKINS-46680] Reset SlaveComputer channel before closing it on ping timeout

* [JENKINS-46680] Attach channel termination offline cause on ping timeouts

(cherry picked from commit dbb5e443)

Pick Remoting 3.10.1 version with reverted FindBugs annotations

[JENKINS-45755, JENKINS-45023, JENKINS-46259, JENKINS-45233] - Integrate Remoting 3.10.1

[JENKINS-45755, JENKINS-45023, JENKINS-46259, JENKINS-45233] - Integrate Remoting 3.10.1 snapshot towards 2.73.2