ceph-mds: enable application pool
ceph-mds: enable application pool

We now enable the application type 'cephfs' for each cephfs pools we
create.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1590275
Signed-off-by: Sébastien Han <62d754cc350e84d3b1c32ae79f976f5348e74a40@redhat.com>

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