[VOL-2239] Add missing parameter

Change-Id: If16464907bed095a68cc442483e0b603487d2c5d
diff --git a/jjb/voltha-e2e.yaml b/jjb/voltha-e2e.yaml
index 1486344..66e736a 100644
--- a/jjb/voltha-e2e.yaml
+++ b/jjb/voltha-e2e.yaml
@@ -21,6 +21,7 @@
           name: 'periodic-voltha-system-test'
           pipeline-script: 'voltha-system-test-bbsim.groovy'
           default-image-tag: 'master'
+          code-branch: 'master'
           make-target: sanity-multi-kind
           onus: 2
           pons: 2