parametrize endpoints

Change-Id: Iffeb7de45c4f4f232f0e8f72c55f9b6e2c5d67c7
diff --git a/tests/pillar/volume_single.sls b/tests/pillar/volume_single.sls
index 1b66ae2..d8f7071 100644
--- a/tests/pillar/volume_single.sls
+++ b/tests/pillar/volume_single.sls
@@ -18,6 +18,7 @@
       tenant: service
       user: cinder
       password: password
+      endpoint_type: internalURL
     glance:
       host: 127.0.0.1
       port: 9292