ceph-facts: fix IPv6 _radosgw_address interface

When using radosgw_interface and IPv6 setup then the _radosgw_address
fact doesn't use square brackets compared to the radosgw_address and
radosgw_address_block configuration.

Closes: #5325

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>
(cherry picked from commit ed4f23d)

roles/ceph-facts/tasks/set_radosgw_address.yml

@@ -39,7 +39,7 @@
 
     - name: set_fact _radosgw_address to radosgw_interface - ipv6
       set_fact:
-        _radosgw_address: "{{ hostvars[inventory_hostname][_interface][ip_version][0]['address'] }}"
+        _radosgw_address: "{{ hostvars[inventory_hostname][_interface][ip_version][0]['address'] | ipwrap }}"
       when: ip_version == 'ipv6'
 
 - name: set_fact rgw_instances without rgw multisite