Remove useless Kubernetes artifact keys

[cdrage]

For example, "importPolicy": {} is added to each OpenShift output.

Within Kubernetes there are also other useless keys that are either null or {}.

Let's remove them.

[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.

Prevent issues from auto-closing with an /lifecycle frozen comment.

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

[surajnarwade]

/lifecycle frozen

[AhmedGrati]

@cdrage is this issue still valid?

[cdrage]

Nope, closing.