rgw: support 1+ rgw instance in radosgw_frontend_port

Change the radosgw_frontend_port to take in account more than 1 RGW instance,
in it's original form `radosgw_frontend_port: radosgw_frontend_port | int`,
it configured the 8080 port to all instances, with the following modification
`radosgw_frontend_port: radosgw_frontend_port | int + item|int` we increase in
1 the port count.

Co-authored-by: Daniel Parkes <dparkes@redhat.com>
Signed-off-by: raul <rmahique@redhat.com>
(cherry picked from commit 110eaf5)

roles/ceph-facts/tasks/set_radosgw_address.yml

@@ -52,7 +52,7 @@
 
 - name: set_fact rgw_instances with rgw multisite
   set_fact:
-    rgw_instances: "{{ rgw_instances|default([]) | union([{'instance_name': 'rgw' + item | string, 'radosgw_address': _radosgw_address, 'radosgw_frontend_port': radosgw_frontend_port | int, 'rgw_realm': rgw_realm | string, 'rgw_zonegroup': rgw_zonegroup | string, 'rgw_zone': rgw_zone | string, 'system_access_key': system_access_key, 'system_secret_key': system_secret_key, 'rgw_zone_user': rgw_zone_user, 'rgw_zone_user_display_name': rgw_zone_user_display_name, 'endpoint': (rgw_pull_proto + '://' + rgw_pullhost + ':' + rgw_pull_port | string) if not rgw_zonemaster | bool and rgw_zonesecondary | bool else omit }]) }}"
+    rgw_instances: "{{ rgw_instances|default([]) | union([{ 'instance_name': 'rgw' + item | string, 'radosgw_address': _radosgw_address, 'radosgw_frontend_port': radosgw_frontend_port | int + item|int, 'rgw_realm': rgw_realm | string, 'rgw_zonegroup': rgw_zonegroup | string, 'rgw_zone': rgw_zone | string, 'system_access_key': system_access_key, 'system_secret_key': system_secret_key, 'rgw_zone_user': rgw_zone_user, 'rgw_zone_user_display_name': rgw_zone_user_display_name, 'endpoint': (rgw_pull_proto + '://' + rgw_pullhost + ':' + rgw_pull_port | string) if not rgw_zonemaster | bool and rgw_zonesecondary | bool else omit }]) }}"
   with_sequence: start=0 end={{ radosgw_num_instances|int - 1 }}
   when:
     - inventory_hostname in groups.get(rgw_group_name, [])