Setting fact _radosgw_address fail when RGW is on a different network

Changed the when condition to only execute that fact setting on RGW
nodes while before it was run on all nodes and failed if the node
was not on the same network range as the RGW.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2131150

Signed-off-by: Teoman ONAY <tonay@redhat.com>
(cherry picked from commit 590e57cc1b)

roles/ceph-dashboard/tasks/configure_dashboard.yml

@@ -33,9 +33,10 @@
 - include_role:
     name: ceph-facts
     tasks_from: set_radosgw_address.yml
-  loop: "{{ groups[rgw_group_name] }}"
+  loop: "{{ groups.get(rgw_group_name, []) }}"
   loop_control:
     loop_var: ceph_dashboard_call_item
+  when: inventory_hostname in groups.get(rgw_group_name, [])
 
 - name: disable SSL for dashboard
   when: dashboard_protocol == "http"