Changed Glare proxy endpoint host

Change-Id: I61beee6756e71f7817ff64aedac0e5602994c722
diff --git a/nginx/server/proxy/openstack/glare.yml b/nginx/server/proxy/openstack/glare.yml
index ac16abc..898f622 100644
--- a/nginx/server/proxy/openstack/glare.yml
+++ b/nginx/server/proxy/openstack/glare.yml
@@ -12,7 +12,7 @@
           underscores_in_headers: true
           check: false
           proxy:
-            host: ${_param:nginx_proxy_openstack_api_proxy_host}
+            host: ${_param:glance_service_host}
             port: 9494
             protocol: http
             size: 30000m