
We'll need it for more than just proposal jobs, but it's clearly very project-config specific, so keep it here. While refactoring that, consume add-sshkey from zuul-jobs. Depends-On: I569b93ba0e775896b5a4f59b544fe32d1e2dce9b Change-Id: I6b16acdcf55bcc6ff28ad496c044fe7db4599cd8