adding missing parameter in build job

Change-Id: I8ad47b4b47f0086ac491f717427b5dcc56fa9a39
diff --git a/jjb/cord-test/nightly-build-pipeline.yaml b/jjb/cord-test/nightly-build-pipeline.yaml
index 9e38942..68da0cd 100644
--- a/jjb/cord-test/nightly-build-pipeline.yaml
+++ b/jjb/cord-test/nightly-build-pipeline.yaml
@@ -513,6 +513,11 @@
          description: 'OLT Software version to install'
 
       - string:
+         name: helmRepoUrl
+         default: 'https://charts.opencord.org'
+         description: 'URL where helm-charts are published'
+
+      - string:
          name: branch
          default: '{branch}'