Update for June 2021

[chipzoller]

See updates as of June 2021: https://neonmirrors.net/post/2021-02/kubernetes-policy-comparison-opa-gatekeeper-vs-kyverno/

[matlegit]

Plus one.

Kyverno also looks to support metrics now as noted in the above article.

Relevant docs: https://kyverno.io/docs/monitoring-kyverno-with-prometheus-metrics/#metrics-and-dashboard