Add casablanca branch for doc ci/cd jobs

Change-Id: I82f60670f26c8c3e188e4bf458a873b64a55d90d
Issue-ID: DOC-331
Signed-off-by: Rich Bennett <rb2745@att.com>
diff --git a/jjb/doc/doc.yaml b/jjb/doc/doc.yaml
index 53409de..f7f2065 100644
--- a/jjb/doc/doc.yaml
+++ b/jjb/doc/doc.yaml
@@ -17,3 +17,5 @@
           branch: 'amsterdam'
       - beijing:
           branch: 'beijing'
+      - casablanca:
+          branch: 'casablanca'