Current puppet-ceph CI is broken for all functional jobs.
I would like to restart from scratch the way we test the module.
1) centos7: deploy Jewel using buildlogs.centos.org repo
CentOS SIG does not provide packaging to deploy the Jewel repository,
let's install it by hand.
2) Remove RGW tests for now. We'll re-add them later, in a
puppet-openstack-integration scenario.
3) Reset spec files to match with other Puppet OpenStack modules.
4) On CentOS, use systemd resource and not sysvinit.
5) Fix keyring idempotency with SElinux.
Change-Id: Ie9ba521cdb4ac6823746d37bb5d1697e274e4119
