Revert "Fix radosgw 'rgw frontends' param"

The original commit changes ceph-rgw to listen on all
addresses (0.0.0.0:6780), which means that it listens on
both the storage_interface address and the VIP.

This makes it incompatible with having HAProxy on the same
host.

This reverts commit 819ae24.

Change-Id: I6cba31cc942a0be9f65d2f4847c8c2bc364a9c1e
Closes-Bug: 1596229
Signed-off-by: Dave Walker (Daviey) <email@daviey.com>

ansible/roles/ceph/templates/ceph.conf.j2

@@ -24,5 +24,5 @@ mon compact on start = true
 host = {{ hostvars[inventory_hostname]['ansible_' + storage_interface]['ipv4']['address'] }}
 keyring = /etc/ceph/ceph.client.radosgw.keyring
 log file = /var/log/kolla/ceph/client.radosgw.gateway.log
-rgw frontends = civetweb port={{ rgw_port }}
+rgw frontends = civetweb port={{ hostvars[inventory_hostname]['ansible_' + storage_interface]['ipv4']['address'] }}:{{ rgw_port }}
 {% endif %}