CI: CentOS 8: Enable ceph-ansible jobs
CI: CentOS 8: Enable ceph-ansible jobs

Change-Id: I308dcd92666993f6726c8984270f2796283aca9a
Partially-Implements: blueprint centos-rhel-8

stackforge/kolla,stackforge/kolla,stackforge/kolla,openstack/kolla,openstack/kolla