document PodSecurity admission settings

[mythi]

kubernetes 1.24 turns on PodSecurity admission on by default. Our plugin deployments need hostPath mounts so the baseline policy fails by default.

We want to document how to comply with Pod Security Standards when using the plugins.
https://kubernetes.io/docs/concepts/security/pod-security-admission/

[mythi]

Our plugin deployments need hostPath mounts so the baseline policy fails by default.

Looks like the default configuration is not baseline after all but privileged so there's no immediate blocker for running the plugins with defaults. Closing.