rgw: allow rgws to be concurrently with or without multisite

Allows rgws in a ceph cluster to be run with
multisite and without multisite at the same time.

Signed-off-by: Ali Maredia <amaredia@redhat.com>
(cherry picked from commit 5c1f4b1)

roles/ceph-facts/tasks/set_radosgw_address.yml

@@ -73,4 +73,4 @@
   with_items: "{{ groups.get(rgw_group_name, []) }}"
   when:
     - inventory_hostname in groups.get(rgw_group_name, [])
-    - rgw_multisite | bool
+    - hostvars[item]["rgw_multisite"] | default(False) | bool