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/nova b/lib/nova
index 818ecc4..33dbc42 100644
--- a/lib/nova
+++ b/lib/nova
@@ -418,7 +418,7 @@
         fi
 
         get_or_create_service "nova_legacy" "compute_legacy" "Nova Compute Service (Legacy 2.0)"
-        get_or_create_endpoint \
+        create_endpoint \
             "compute_legacy" \
             "$REGION_NAME" \
             "$nova_api_url/v2/\$(project_id)s" \
@@ -426,7 +426,7 @@
             "$nova_api_url/v2/\$(project_id)s"
 
         get_or_create_service "nova" "compute" "Nova Compute Service"
-        get_or_create_endpoint \
+        create_endpoint \
             "compute" \
             "$REGION_NAME" \
             "$nova_api_url/v2.1" \
@@ -446,7 +446,7 @@
     # S3
     if is_service_enabled swift3; then
         get_or_create_service "s3" "s3" "S3"
-        get_or_create_endpoint \
+        create_endpoint \
             "s3" \
             "$REGION_NAME" \
             "http://$SERVICE_HOST:$S3_SERVICE_PORT" \