Temporary override of ceph openstack_keys
Temporary override of ceph openstack_keys

This will use the correct keys in CI. It will unblock stein as
cinder-volume is currently broken becasue of [1].

[1] https://github.com/ceph/ceph-ansible/issues/2296

Change-Id: I85937c733c4dc21b2ed36e9dcefe3e6e8808f77a

openstack/openstack-ansible,openstack/openstack-ansible,stackforge/os-ansible-deployment,stackforge/os-ansible-deployment