it is now part of ironic itself, and version in ironic-staging-drivers
conflicts with version in ironic, blocking ironic-conductor from
starting when ironic-staging-drivers is installed.
Change-Id: I917b7399b3249143ba6cf75f61d96a1c64f94e7d
some places (apart from job names) were changed compared to what's
in openstack-zuul-jobs currently, mostly added/changed irrelevant-files,
and refactored to have a base dummy job to define common things.
Change-Id: Iff64438857e0947db1154645f6e2e964b38593c6