update kubeadm cgroup driver documentation once KubeletCgroupDriverFromCRI goes GA

[neolit123]

original k/k ticket:

• match the kubelet and CRI implementer cgroup drivers kubernetes#99808

the new feature gate was added in a previous release and is planned for beta in 1.31:

• Discover cgroup driver from CRI enhancements#4033

once GA we should remove this page:

• https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/configure-cgroup-driver/

perhaps SIG node and feature owners will update:

• https://kubernetes.io/docs/setup/production-environment/container-runtimes/#cgroup-drivers

users would still be required to pick a driver and configure it on the side of container runtimes (e.g. containerd).

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[k8s-triage-robot]

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/lifecycle rotten

[pacoxu]

the new feature gate was added in a previous release and is planned for beta in 1.31:
kubernetes/enhancements#4033

This is planned to be beta in this release cycle.

• We may use it if the FG is enabled and the cgroup driver can be detected from the CRI. And we can fall back to our previous logic if not.

[neolit123]

the new feature gate was added in a previous release and is planned for beta in 1.31:
kubernetes/enhancements#4033

This is planned to be beta in this release cycle.

• We may use it if the FG is enabled and the cgroup driver can be detected from the CRI. And we can fall back to our previous logic if not.

i don't think we have any remaining logic for this, do we? we just set the cgroup driver to systemd.

https://github.com/kubernetes/kubernetes/blob/ef9965ebc66dafda37800bb04f5e284535bbba10/cmd/kubeadm/app/componentconfigs/kubelet.go#L194