Add casablanca branch to integration repo jobs

Change-Id: I21e3ef972edc9dcbc5b3f2d624118ad8072e6860
diff --git a/jjb/integration/integration-csit-rebase-jobs.yaml b/jjb/integration/integration-csit-rebase-jobs.yaml
index 7499efb..cdfdc3a 100644
--- a/jjb/integration/integration-csit-rebase-jobs.yaml
+++ b/jjb/integration/integration-csit-rebase-jobs.yaml
@@ -27,5 +27,8 @@
     stream:
       - master:
           branch: '{stream}'
+      - casablanca:
+          branch: '{stream}'
+
     jobs:
       - '{project-name}-{stream}-rebase'
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