title: Jenkins pipeline: propagate "keep this build forever" to downstream jobs
body: <p>Is there some option to propagate "keep this build forever" to jobs started by pipeline which I want to keep forever?</p>
  
  <p>Now, this button works only on single job/pipeline. But if I need to keep the pipeline with its job I need to go every single job started by this pipeline and click on "keep this build forever"</p>
  
  <p>Thanks for any suggestion.</p>