Add glusterfs_registry hosts to oo_all_hosts.

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1474630

Signed-off-by: Jose A. Rivera <jarrpa@redhat.com>

playbooks/byo/openshift-cluster/cluster_hosts.yml

@@ -20,5 +20,5 @@ g_glusterfs_registry_hosts: "{{ groups.glusterfs_registry | default(g_glusterfs_
 g_all_hosts: "{{ g_master_hosts | union(g_node_hosts) | union(g_etcd_hosts)
                  | union(g_lb_hosts) | union(g_nfs_hosts)
                  | union(g_new_node_hosts)| union(g_new_master_hosts)
-                 | union(g_glusterfs_hosts)
+                 | union(g_glusterfs_hosts) | union(g_glusterfs_registry_hosts)
                  | default([]) }}"