[AAI] Update AAI to build kohn jobs

Issue-ID: AAI-3539
Signed-off-by: wr148d <wr148d@att.com>
Change-Id: I42062adafefcbc6ec12192059a3077e1341a0be7
diff --git a/jjb/aai/aai-graphadmin.yaml b/jjb/aai/aai-graphadmin.yaml
index 9cd9b7d..a258cbb 100644
--- a/jjb/aai/aai-graphadmin.yaml
+++ b/jjb/aai/aai-graphadmin.yaml
@@ -27,8 +27,8 @@
     stream:
       - 'master':
           branch: 'master'
-      - 'istanbul':
-          branch: 'istanbul'
+      - 'kohn':
+          branch: 'kohn'
     mvn-settings: 'aai-graphadmin-settings'
     mvn-version: 'mvn35'
     files: '**'