VOL-2630 Use voltha-onos:4.0.0 for helm chart sanity check

Change-Id: Ia7adf4ed7e799cca33c9e7d9d381e9800f7790aa
diff --git a/jjb/verify/voltha-helm-charts.yaml b/jjb/verify/voltha-helm-charts.yaml
index fd88c24..c7389bb 100644
--- a/jjb/verify/voltha-helm-charts.yaml
+++ b/jjb/verify/voltha-helm-charts.yaml
@@ -21,4 +21,4 @@
           dependency-jobs: 'verify_voltha-helm-charts_helm-lint'
           build-timeout: 20
           pipeline-script: 'voltha-bbsim-tests.groovy'
-          extra-helm-flags: '--set defaults.image_tag=null,images.onos.tag=2.2.0'
+          extra-helm-flags: '--set defaults.image_tag=null,images.onos.tag=4.0.0,images.onos.repository=voltha/voltha-onos'