Fix glance registry is down under haproxy

Change-Id: I2b73b2a636e31a9726052687b04e63765e6860be
Related-Prod: https://mirantis.jira.com/browse/PROD-21807
diff --git a/classes/cluster/virtual-offline-ssl/openstack/proxy.yml b/classes/cluster/virtual-offline-ssl/openstack/proxy.yml
index 497eb0e..6bf692a 100644
--- a/classes/cluster/virtual-offline-ssl/openstack/proxy.yml
+++ b/classes/cluster/virtual-offline-ssl/openstack/proxy.yml
@@ -3,6 +3,7 @@
 - system.nginx.server.proxy.openstack_api
 - system.nginx.server.proxy.openstack_vnc
 - system.nginx.server.proxy.openstack_web
+- system.nginx.server.proxy.openstack.glance_registry
 - system.nginx.server.proxy.ssl
 - system.salt.minion.cert.proxy
 - cluster.virtual-offline-ssl