fixing trigger params in voltha-atest job

Change-Id: Ie8e97bebe594ef916d6fa08b911c01e6ce61aa79
diff --git a/jjb/pipeline/voltha-atest-provisioning.groovy b/jjb/pipeline/voltha-atest-provisioning.groovy
index 2856bb2..d4a6cde 100755
--- a/jjb/pipeline/voltha-atest-provisioning.groovy
+++ b/jjb/pipeline/voltha-atest-provisioning.groovy
@@ -40,6 +40,7 @@
         sh '''
         sudo service docker restart
         cd $WORKSPACE/cord/incubator/voltha
+        repo download voltha "${gerritChangeNumber}/${gerritPatchsetNumber}"
         chmod +x env.sh
         source env.sh
         make fetch