docs KubeOne: update doc about configuring OIDC

doc : https://docs.kubermatic.com/kubeone/v1.6/tutorials/creating-clusters-oidc/

The documentation is a bit outdated as the cert-manager chart does not deploy ClusterIssuer anymore. Moreover, a customer was wondering how to use a self-signed CA.

TODO:

[x] add deployment of ClusterIssuer
[x] add an explanation about how to use a self-signed CA

Mar 02 '23 09:03 vgramer

Issues go stale after 90d of inactivity. After a furter 30 days, they will turn rotten. Mark the issue as fresh with /remove-lifecycle stale.

If this issue is safe to close now please do so with /close.

/lifecycle stale

Jun 05 '23 19:06 kubermatic-bot

/remove-lifecycle stale

Jun 06 '23 11:06 embik

Issues go stale after 90d of inactivity. After a furter 30 days, they will turn rotten. Mark the issue as fresh with /remove-lifecycle stale.

If this issue is safe to close now please do so with /close.

/lifecycle stale

Sep 04 '23 11:09 kubermatic-bot

Stale issues rot after 30d of inactivity. Mark the issue as fresh with /remove-lifecycle rotten. Rotten issues close after an additional 30d of inactivity.

If this issue is safe to close now please do so with /close.

/lifecycle rotten

Oct 04 '23 11:10 kubermatic-bot

/remove-lifecycle rotten

Oct 09 '23 09:10 embik

Issues go stale after 90d of inactivity. After a furter 30 days, they will turn rotten. Mark the issue as fresh with /remove-lifecycle stale.

If this issue is safe to close now please do so with /close.

/lifecycle stale

Jan 07 '24 11:01 kubermatic-bot

/remove-lifecycle stale

Jan 08 '24 08:01 embik