Add CIS Benchmark documentation to KubeOne

[koksay]

This PR adds CIS Benchmark 1.8 documentation for KubeOne 1.7.3 and Kubernetes 1.27.

It especially requires a review for:

1. Formatting in general
2. Details section for Not Applicable controls
3. Warn and Fail controls, if they should be changed to Not Applicable

[koksay]

@embik I believe I covered all the items except --anonymous-auth parameter setting. To be honest, I have no idea why we don't set it at all (other than it does not cause issues because or our RBAC settings)

[embik]

@embik I believe I covered all the items except --anonymous-auth parameter setting. To be honest, I have no idea why we don't set it at all (other than it does not cause issues because or our RBAC settings)

I think this document will need another review from @xmudrii and @kron4eg to figure out things like that.

[koksay]

@xmudrii Thanks again for the review. I updated the document based on your feedback.

I also added my doc generation python script to the hack directory, so it would be used later.

[koksay]

@xmudrii I put it on the main documentation, should it also be under 1.7?

[xmudrii]

@koksay Adding it to 1.7 makes sense, do you want to do that before we merge this PR?

[kubermatic-bot]

LGTM label has been added.

Git tree hash: 933182b385cb85e8dd8c4c27a0cbe00f28f5df51

[kubermatic-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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