Set designate to connect via rndc on localhost

By default bind9 should listen rndc on localhost.
For AIO it is ok to use 127.0.0.1 as rndc
target ip.

Change-Id: I60db7667de51a24bed17e7432221bfd9e65240c7
Depends-On: I0ca7ae3da6c53a373ffdf19ed3f9a4444b74dcc9
Depends-On: I0f24ec848dd5dd906780a3c63917cfbcbd759fd9
diff --git a/classes/cluster/virtual-mcp11-aio/openstack/init.yml b/classes/cluster/virtual-mcp11-aio/openstack/init.yml
index 0461b23..6cc6c14 100755
--- a/classes/cluster/virtual-mcp11-aio/openstack/init.yml
+++ b/classes/cluster/virtual-mcp11-aio/openstack/init.yml
@@ -98,7 +98,7 @@
     designate_pool_target_options:
       host: ${_param:single_address}
       port: 53
-      rndc_host: ${_param:single_address}
+      rndc_host: 127.0.0.1
       rndc_port: 953
       rndc_key_file: /etc/designate/rndc.key
     linux_system_repo: deb [arch=amd64] http://mirror.fuel-infra.org/mcp-repos/${_param:openstack_version}/xenial ${_param:openstack_version} main