Implement a build_stage_repository wrapper

[ekohl]

This wraps the logic that is currently in jenkins-jobs. It uses the fact the repository list is already in the settings and then iterates over it.

Currently untested, writing the jenkins-jobs logic that builds on it now.

[ehelms]

I'd like you to meet https://github.com/theforeman/theforeman-rel-eng/blob/master/generate_stage_repository :) My plan all along has been to use scripts from this repo (see #291 (comment)) and theforeman/jenkins-jobs#369 is the first update I want to make before proceeding on to more scripts.

[ekohl]

Somehow I completely missed the existence of that script. I was playing around with reviewing your PR and reason about it.

[ekohl]

Btw, the naming of generate_stage_repository is IMHO misleading since it's generating multiple repositories, so should be plural instead of singular.

[ehelms]

Btw, the naming of generate_stage_repository is IMHO misleading since it's generating multiple repositories, so should be plural instead of singular.

Fair-ish, it could generate one or more repositories! Depends on the definition of OSES :)