cephadm-adopt: use radosgw modules for idempotency
cephadm-adopt: use radosgw modules for idempotency

When rerunning the cephadm-adopt.yml playbook the radosgw realm,
zonegroup and zone tasks will fail because the task isn't
idempotent.
Using the radosgw ansible modules solves that problem.

Signed-off-by: Dimitri Savineau <a50a620e679eed14f4e99998b821cea8884cf228@redhat.com>

ceph/ceph-ansible,ceph/ceph-ansible