title: Jenkins trigger another job for specific branch
body: <p>I'd have a pipeline with some jobs until the deploy like that:</p>
  
  <p>(unit test) -> (integration test) -> (package) -> (deploy)</p>
  
  <p>but I'd like to run the jobs (unit test) and (integration test) in all branches,
  and run jobs (package) and (deploy) only on changes on branch master.</p>
  
  <p>How can I do it? Are there a conditional trigger plugin?</p>