JJB cleanups for VOLTHA.

Misc/
  o yaml lint clenaups
  o Remove prototype voltha-2.{9,10,11} job placeholders.
  o Replace mainatiner email address (Matteo) with build system group.

Change-Id: I37e1175f56042632753b75c849dbaf07f74bd284
diff --git a/jjb/cord-test/seba-release.yaml b/jjb/cord-test/seba-release.yaml
index 8a9a5f2..1446bfe 100644
--- a/jjb/cord-test/seba-release.yaml
+++ b/jjb/cord-test/seba-release.yaml
@@ -55,7 +55,7 @@
           Jenkinsfile: 'Jenkinsfile-attworkflow-build-released-ver'
           oltDebVersion: 'openolt-master.deb'
 
-     # Flex POD build 2.0
+          # Flex POD build 2.0
       - 'build_pod_manual_release':
           build-node: 'qa-testvm-pod'
           config-pod: 'flex-ocp-cord'