CORD-391 - cleaned up ansible to pass cleanly through ansible-lint

Change-Id: I90284704255edc19abbdb239852c520a4bf48df4
diff --git a/roles/registry/tasks/main.yml b/roles/registry/tasks/main.yml
index e371463..a55ecad 100644
--- a/roles/registry/tasks/main.yml
+++ b/roles/registry/tasks/main.yml
@@ -50,4 +50,5 @@
   command: docker-compose -f /etc/maas/{{ item }} up -d
   with_items:
     - registry-compose.yml
+  changed_when: true
   tags: [registry]