tests: ceph.conf tests for the xenial 3 mon cluster
tests: ceph.conf tests for the xenial 3 mon cluster

Signed-off-by: Andrew Schoen <aschoen@redhat.com>

Resolves: testing#updates

WingkaiHo/ceph-ansible,jsaintrocc/ceph-ansible,fgal/ceph-ansible,ceph/ceph-ansible,albertomurillo/ceph-ansible,jtaleric/ceph-ansible,travmi/ceph-ansible,WingkaiHo/ceph-ansible,jsaintrocc/ceph-ansible,ceph/ceph-ansible,guits/ceph-ansible,guits/ceph-ansible,font/ceph-ansible,WingkaiHo/ceph-ansible,bengland2/ceph-ansible,bengland2/ceph-ansible,jtaleric/ceph-ansible,font/ceph-ansible,albertomurillo/ceph-ansible,fgal/ceph-ansible,travmi/ceph-ansible,albertomurillo/ceph-ansible