Merge atomic/ws installers
There were two differences:
- cloud-init: Addressed in previous commit
- install/updates refs: Will make pungi-fedora do the same for WS
The main reason I'm doing this now (aside from the obvious maintenance win)
is to fix https://bugzilla.redhat.com/show_bug.cgi?id=1462379
Signed-off-by: Colin Walters <walters@verbum.org>