title: How to manage multiple Jenkins pipelines from a single repository?
body: <p>At this moment we use JJB to compile Jenkins jobs (mostly pipelines already) in order to configure about 700 jobs but JJB2 seems not to scale well to build pipelines and I am looking for a way to drop it from the equation.</p>
  
  <p>Mainly i would like to be able to have all these pipelines stored in a <strong>single centralized repository</strong>.</p>
  
  <p>Please note that keeping the CI config (Jenkinsfile) inside each repository and branch is not possible in our use case, we need to keep all pipelines in a single "jenkins-jobs.git" repo.</p>