Allow keystone endpoint_type interpolation for Neutron models
 - Add 'endpoint_type' identity parameter
 - Set 'endpoint_type: internal' as a
   default parameter for 'service' reclass model (/metadata/)

Change-Id: If328588f2a6f324aec1df7b4ba7ba03ce9431855
diff --git a/metadata/service/control/container.yml b/metadata/service/control/container.yml
index 76931da..bca3d9e 100644
--- a/metadata/service/control/container.yml
+++ b/metadata/service/control/container.yml
@@ -1,4 +1,6 @@
 parameters:
+  _param:
+    keystone_neutron_endpoint_type: internal
   kubernetes:
     control:
       configmap:
@@ -29,6 +31,7 @@
                   user: neutron
                   password: ${_param:keystone_neutron_password}
                   tenant: service
+                  endpoint_type: ${_param:keystone_neutron_endpoint_type}
                 message_queue:
                   engine: rabbitmq
                   host: ${_param:rabbitmq_service_host}