fix in voltha-atests pipeline

Change-Id: Ie767ab0bba52ce10e6d0029e0d069b8cefb924f4
diff --git a/jjb/pipeline/voltha-atest-provisioning.groovy b/jjb/pipeline/voltha-atest-provisioning.groovy
index e156350..ad5095a 100755
--- a/jjb/pipeline/voltha-atest-provisioning.groovy
+++ b/jjb/pipeline/voltha-atest-provisioning.groovy
@@ -42,7 +42,7 @@
         sh '''
         sudo service docker restart
         cd $WORKSPACE/cord/incubator/voltha
-        repo download ${gerritProject} "${gerritChangeNumber}/${gerritPatchsetNumber}"
+        repo download "${GERRIT_PROJECT}" "${gerritChangeNumber}/${gerritPatchsetNumber}"
         chmod +x env.sh
         source env.sh
         make fetch