[haproxy] Included *stats* page.
diff --git a/metadata/service/proxy/admin.yml b/metadata/service/proxy/admin.yml
index 9da7ec1..b742065 100644
--- a/metadata/service/proxy/admin.yml
+++ b/metadata/service/proxy/admin.yml
@@ -3,6 +3,8 @@
 parameters:
   _param:
     haproxy_admin_password: password
+    haproxy_admin_address: '0.0.0.0'
+    haproxy_admin_port: 9600
   haproxy:
     proxy:
       listen:
@@ -10,7 +12,7 @@
           type: admin
           check: false
           binds:
-          - address: '0.0.0.0'
-            port: 9600
+          - address: {_param:haproxy_admin_address}
+            port: {_param:haproxy_admin_port}
           user: admin
           password: ${_param:haproxy_admin_password}