run rados cmd in container if containerized deployment
run rados cmd in container if containerized deployment

When ceph-nfs is deployed containerized and ceph-common is not
installed on the host the start_nfs task fails because the rados
command is missing on the host.

Run rados commands from a ceph container instead so that
they will succeed.

Signed-off-by: Tom Barron <93d01d238ec1321972eb37c08fadec0e93f0e99c@dyncloud.net>

ceph/ceph-ansible,fgal/ceph-ansible,ceph/ceph-ansible,fgal/ceph-ansible