ONAP: Add Dublin branch for so project

Change-Id: Ic91211aa23ad969280e0ca4d1533a3e7dfddcd3e
diff --git a/jjb/so/so-rebase-jobs.yaml b/jjb/so/so-rebase-jobs.yaml
index 30e8dae..fb91557 100644
--- a/jjb/so/so-rebase-jobs.yaml
+++ b/jjb/so/so-rebase-jobs.yaml
@@ -29,5 +29,8 @@
           branch: '{stream}'
       - casablanca:
           branch: '{stream}'
+      - dublin:
+          branch: '{stream}'
+
     jobs:
       - '{project-name}-{stream}-rebase'