Merge branch 'feat-allow-pipeline-fail' into 'master'

Allow failure for pipeline

See merge request !13

.gitlab-ci.yml

@@ -64,7 +64,8 @@ clean_up:   # This job removes older built images
         echo ${img}
         openstack image delete ${img}
       done
-
+  allow_failure: true
+  
 trigger_job:
   stage: post_build
   variables: