Use puppet agent --test for puppet cron.
We don't need the private ssh or gpg key on the slaves anymore.
We do need the glance testing stuff, so stick that into hiera.
Change-Id: If94fc3f150bf569efe9461f80d3565f9825eebce
Reviewed-on: https://review.openstack.org/10851
Approved: Monty Taylor <mordred@inaugust.com>
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Tested-by: Jenkins