Conformance test fails with incorrect image

When trying to run the conformance tests, i found that e2e pod for sonobuoy was failing. The error was:
Warning  InspectFailed  10m (x27 over 15m)  kubelet, testing-master-0  Failed to apply default image tag "akraino/validation:kube-conformance-v1.16+": couldn't parse image reference "akraino/validation:kube-conformance-v1.16+": invalid reference format

I had to manually edit the image of that pod, and use akraino/validation:kube-conformance-v1.16