VOL-2000 fix

Change-Id: I0411e0a202c3e98e77e112511cf750dd7df133e9
diff --git a/jjb/pipeline/voltha-bbsim-tests.groovy b/jjb/pipeline/voltha-bbsim-tests.groovy
index 5575c8d..b218d4c 100644
--- a/jjb/pipeline/voltha-bbsim-tests.groovy
+++ b/jjb/pipeline/voltha-bbsim-tests.groovy
@@ -117,9 +117,10 @@
            fi
 
            if [ "${gerritProject}" = "voltha-helm-charts" ]; then
-             export VOLTHA_CHART=$WORKSPACE/voltha/voltha
-             export VOLTHA_ADAPTER_OPEN_OLT_CHART=$WORKSPACE/voltha/voltha-adapter-openolt
-             export VOLTHA_ADAPTER_OPEN_ONU_CHART=$WORKSPACE/voltha/voltha-adapter-openonu
+             export CHART_PATH=$WORKSPACE/voltha/voltha-helm-charts
+             export VOLTHA_CHART=\$CHART_PATH/voltha
+             export VOLTHA_ADAPTER_OPEN_OLT_CHART=\$CHART_PATH/voltha-adapter-openolt
+             export VOLTHA_ADAPTER_OPEN_ONU_CHART=\$CHART_PATH/voltha-adapter-openonu
              helm dep update \$VOLTHA_CHART
              helm dep update \$VOLTHA_ADAPTER_OPEN_OLT_CHART
              helm dep update \$VOLTHA_ADAPTER_OPEN_ONU_CHART