Initialize new LTS line (2.289)

[res0nance]

Prep work for jenkins-infra/release#153

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your master branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue

Fixes #491

[jglick]

see #491

[res0nance]

Remaining seems to be issues with pipeline-input-step for some reason the automated test breaks not exactly sure why. Manually testing it proves it still works. But due to the same reason a good chunk of pipeline-model-definition tests fail because they use input. pipeline-model-definition also has some parameter tests that need simple fixes as well. Outside of that we have ssh-slaves I haven't taken a close look at that one.

[res0nance]

So the issue to ssh-slaves seems related to pipeline-input step where clicking an element seems to not pass its parameters as well. It only affects 2.289 not 2.288. Might be related to jenkinsci/jenkins#5405

[res0nance]

James has filed https://issues.jenkins.io/browse/JENKINS-65585, which is likely related to some of these failures

[jglick]

Feel free to add exclusions to pct.sh for cases where you have already filed PRs to correct the situation.

[jtnord]

see also jenkinsci/jenkins#5481

[jetersen]

Seems we are down to pct-pipeline-model-definition-2.289.x failure

[jglick]

Make sure to merge in master.

[jglick]

Blocking #538 (thus picking up jenkinsci/ssh-credentials-plugin#70). #536 thus jenkinsci/credentials-plugin#205 is already in so may as well go ahead with #533 thus jenkinsci/credentials-binding-plugin#132.

[res0nance]

This is finally passing if anyone can merge it

[jetersen]

This is finally passing if anyone can merge it

Done 😃

[jglick]

#541