[DCAE] Jobs updated to include istanbul branch

Change-Id: Id8242402bf6165962ba7f851f77a593a2794dcf7
Signed-off-by: vv770d <vv770d@att.com>
Issue-ID: DCAEGEN2-2918
Signed-off-by: vv770d <vv770d@att.com>
diff --git a/jjb/dcaegen2/dcaegen2-collectors-datafile.yaml b/jjb/dcaegen2/dcaegen2-collectors-datafile.yaml
index d0ef104..4374d47 100644
--- a/jjb/dcaegen2/dcaegen2-collectors-datafile.yaml
+++ b/jjb/dcaegen2/dcaegen2-collectors-datafile.yaml
@@ -6,8 +6,8 @@
     stream:
       - 'master':
           branch: 'master'
-      - 'guilin':
-          branch: 'guilin'
+      - 'istanbul':
+          branch: 'istanbul'
       - 'honolulu':
           branch: 'honolulu'
     java-version: openjdk11