Adding a notification step if docker-publish job fails

Change-Id: I0a81896fe67b3d9eeb1901ceb21113c6833e459f
diff --git a/jjb/verify/xos.yaml b/jjb/verify/xos.yaml
index 62340c4..aaf54a9 100644
--- a/jjb/verify/xos.yaml
+++ b/jjb/verify/xos.yaml
@@ -44,6 +44,7 @@
           pypi-index: 'pypi'
           dependency-jobs: 'version-tag'
       - 'docker-publish':
+          maintainers: "teo@opennetworking.org, andy@opennetworking.org, scottb@opennetworking.org"
           build-timeout: 30
           docker-repo: 'xosproject'
           dependency-jobs: 'version-tag'