Add helm repo for xos-core requirements

Change-Id: I478ad7221cd8eadfe685c569a61056c6bec46980
diff --git a/jjb/pipeline/xos-core.groovy b/jjb/pipeline/xos-core.groovy
index b6001fb..e0681bd 100644
--- a/jjb/pipeline/xos-core.groovy
+++ b/jjb/pipeline/xos-core.groovy
@@ -84,6 +84,7 @@
            helm init
            sleep 60
            helm repo add incubator https://kubernetes-charts-incubator.storage.googleapis.com/
+           helm repo add cord https://charts.opencord.org
            '''
       }
     }