WIP: :feature: PoC: global service accounts without warrants

[sttts]

Summary

With #3260 service account can act anonymously in other logical clusters. This PR now adds rule resolver support for the global service account name system:kcp:serviceaccount:cluster:ns:name. With that "magically" you can bind RBAC roles against it.

Related issue(s)

Fixes #

Release Notes

Make Kube service accounts act as `system:kcp:serviceaccount:cluster:ns:name` in additional to their normal user name `system:serviceaccount:ns:name`.

[kcp-ci-bot]

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[kcp-ci-bot]

@sttts: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-kcp-verify	39d829d	link	true	/test pull-kcp-verify
pull-kcp-test-e2e-sharded	39d829d	link	true	/test pull-kcp-test-e2e-sharded

Full PR test history

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[kcp-ci-bot]

PR needs rebase.

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[sttts]

/close

[kcp-ci-bot]

@sttts: Closed this PR.

In response to this:

/close

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