Setting right onos image repo for voltha-onos tests

Change-Id: I0c84659918ddfbe20ce7edd028d38d2b1a1d56ae
diff --git a/jjb/pipeline/voltha-bbsim-tests.groovy b/jjb/pipeline/voltha-bbsim-tests.groovy
index 0dc01af..5ece060 100644
--- a/jjb/pipeline/voltha-bbsim-tests.groovy
+++ b/jjb/pipeline/voltha-bbsim-tests.groovy
@@ -237,6 +237,7 @@
              IMAGES="ofagent_go "
            elif [ "${gerritProject}" = "voltha-onos" ]; then
              IMAGES="onos "
+             EXTRA_HELM_FLAGS+="--set images.onos.repository=mirror.registry.opennetworking.org/voltha/voltha-onos "
            elif [ "${gerritProject}" = "voltha-openolt-adapter" ]; then
              IMAGES="adapter_open_olt "
            elif [ "${gerritProject}" = "voltha-openonu-adapter" ]; then