Don't check for existing endpoints

We really should only have code that create endpoints once, making all
osc calls get_or_set adds 3 seconds per call for no really good
reason.

This also stops creating the internal endpoints in the service
catalog. It's a pattern that we're trying not to propogate, so lets
not have it in devstack any more.

Change-Id: Ia8cefe43753900d62117beae330db46deb6a9fc9
diff --git a/lib/cinder b/lib/cinder
index 607a6f8..037456a 100644
--- a/lib/cinder
+++ b/lib/cinder
@@ -372,7 +372,7 @@
         create_service_user "cinder"
 
         get_or_create_service "cinder" "volume" "Cinder Volume Service"
-        get_or_create_endpoint \
+        create_endpoint \
             "volume" \
             "$REGION_NAME" \
             "$CINDER_SERVICE_PROTOCOL://$CINDER_SERVICE_HOST:$CINDER_SERVICE_PORT/v1/\$(project_id)s" \
@@ -380,7 +380,7 @@
             "$CINDER_SERVICE_PROTOCOL://$CINDER_SERVICE_HOST:$CINDER_SERVICE_PORT/v1/\$(project_id)s"
 
         get_or_create_service "cinderv2" "volumev2" "Cinder Volume Service V2"
-        get_or_create_endpoint \
+        create_endpoint \
             "volumev2" \
             "$REGION_NAME" \
             "$CINDER_SERVICE_PROTOCOL://$CINDER_SERVICE_HOST:$CINDER_SERVICE_PORT/v2/\$(project_id)s" \
@@ -388,7 +388,7 @@
             "$CINDER_SERVICE_PROTOCOL://$CINDER_SERVICE_HOST:$CINDER_SERVICE_PORT/v2/\$(project_id)s"
 
         get_or_create_service "cinderv3" "volumev3" "Cinder Volume Service V3"
-        get_or_create_endpoint \
+        create_endpoint \
             "volumev3" \
             "$REGION_NAME" \
             "$CINDER_SERVICE_PROTOCOL://$CINDER_SERVICE_HOST:$CINDER_SERVICE_PORT/v3/\$(project_id)s" \