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/tests/pillar/control_cluster.sls b/tests/pillar/control_cluster.sls
index 1d21783..1aba7fd 100644
--- a/tests/pillar/control_cluster.sls
+++ b/tests/pillar/control_cluster.sls
@@ -32,6 +32,7 @@
       user: neutron
       password: password
       tenant: service
+      endpoint_type: internal
     message_queue:
       engine: rabbitmq
       members: