Add ceph::repo RedHat support

Adds repo's required to support RedHat distros.
Update case tests so RedHat doesn't fail.

Sourced from: https://github.com/Mirantis/fuel/blob/master/deployment/puppet/ceph/manifests/yum.pp

System spec tests will be provided in a follow up commit
repos are from a working deployment and are tested by hand.

Closes-bug: #1243872
Change-Id: I6d9e356bac6855fd30c522916bf7c4867195488c
Merge "Add ceph::repo RedHat support"