Investigate server-side apply to allow cooperating controllers

[dprotaso]

Refs:
https://kubernetes.io/docs/reference/using-api/server-side-apply/
knative-extensions/net-contour#347 (comment)

This would allow customization of the resources we create

/assign @dprotaso

[github-actions]

This issue is stale because it has been open for 90 days with no
activity. It will automatically close after 30 more days of
inactivity. Reopen the issue with /reopen. Mark the issue as
fresh by adding the comment /remove-lifecycle stale.

[dprotaso]

/lifecycle frozen

[dprotaso]

Following up here - I'm wondering if it's possible for a webhook to add defaults which the controller ignores after the fact

[dprotaso]

FYI there's a server-side apply bug upstream that's worth keeping tabs on - kubernetes/kubernetes#111937

I don't believe if blocks this issue