Comment 1 for bug 1160269

This was easy, so I went ahead and implemented it just now. I added the openstack-diablo-maint and openstack-essex-maint groups in Gerrit and gave them the same (worryingly small) list of members. I duplicated the permissions openstack-stable-maint has over refs/heads/stable/* to refs/heads/stable/diablo and essex for these new groups, including the same exclusive rights. I believe this will have the effect that openstack-stable-maint no longer has control over diablo and essex. Was that the intent (the wiki is a bit vague on that point), or should it also be an included member of those two other groups?