From b38b4184bad5b42e3392aef5e119e5e6bdbfb049 Mon Sep 17 00:00:00 2001
From: Emilien Macchi <emilien@redhat.com>
Date: Mon, 18 Feb 2019 19:48:13 -0500
Subject: [PATCH] kolla_builder: don't build template mapping when not needed

When CONTAINER_IMAGES_DEFAULTS is empty, we don't need to build
the template mapping.

Change-Id: Ie0213819e97d5239978bcef5f06657804bc3ef3d
---
 tripleo_common/image/kolla_builder.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tripleo_common/image/kolla_builder.py b/tripleo_common/image/kolla_builder.py
index 3382f29dd..3f4169824 100644
--- a/tripleo_common/image/kolla_builder.py
+++ b/tripleo_common/image/kolla_builder.py
@@ -387,6 +387,8 @@ class KollaImageBuilder(base.BaseImageManager):
         hyphenated appropriately.
         '''
         mapping = dict(kwargs)
+        if CONTAINER_IMAGES_DEFAULTS is None:
+            return
         for k, v in CONTAINER_IMAGES_DEFAULTS.items():
             mapping.setdefault(k, v)
         np = mapping['name_prefix']