Add push,rebase,verify jobs for Dublin branch of sdnc/oam project

Change-Id: I3ad81f37bf4da69925fcbd88049a490eee343791
diff --git a/jjb/sdnc/sdnc-oam-rebase.yaml b/jjb/sdnc/sdnc-oam-rebase.yaml
index 0bb98c2..b39876f 100644
--- a/jjb/sdnc/sdnc-oam-rebase.yaml
+++ b/jjb/sdnc/sdnc-oam-rebase.yaml
@@ -27,6 +27,8 @@
     stream:
       - master:
           branch: '{stream}'
+      - dublin:
+          branch: '{stream}'
 
     jobs:
       - '{project-name}-{stream}-rebase'