Add Kubernetes e2e

[msau42]

So that the Dockerfile and Kubernetes specs are also tested. Maybe minikube or a local cluster could work.

[fejta-bot]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

If this issue is safe to close now please do so with /close.

Send feedback to sig-testing, kubernetes/test-infra and/or fejta.
/lifecycle stale

[msau42]

/remove-lifecycle stale
/lifecycle frozen