RFC: support for ENV to filter out PR builds

[cdaringe]

What feature do you want to see added?

My job runs builds against commits into the associated branch and PR builds against the associated branch,
but I have no capable filter to remove PR builds.

It would be great to use something like ENV vars (vs just build params):

/buildStatus/icon?job=foo%2Fbar&build=lastCompleted:${env.TRIGGER_BRANCH=main}

such that my PR builds in my job are not used for the badge.

Upstream changes

No response

[MarkEWaite]

I don't plan to implement this because I believe that a single job that builds multiple branches is confusing for users. It is better to use a multibranch Pipeline and allow the multibranch to create and delete jobs as pull requests arrive and are merged.

[cdaringe]

Bummer. MultiBranch jenkins isn’t available to me