kubelet: fix kubeletconfig.cgroupDriver in configz

[marquiz]

Reflect the correct cgroupDriver setting in the configz enpoint in case the cgroup driver setting is received from the CRI. Moves the initialization of the configz handler to a slightly later phase where the CRI has been queried.

What type of PR is this?

/kind bug

What this PR does / why we need it:

Which issue(s) this PR is related to:

Fixes #134673

Special notes for your reviewer:

Related to kubernetes/enhancements#4033

Does this PR introduce a user-facing change?

Fixes an issue where the kubelet /configz endpoint reported incorrect value for kubeletconfig.cgroupDriver when the cgroup driver setting is received from the container runtime.

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[k8s-ci-robot]

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[marquiz]

/cc @SergeyKanzhelev

[SergeyKanzhelev]

/lgtm
/approve
/retest

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 5e44e59d0d8a488d2faab206bc835cdd871d7c9e

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: marquiz, SergeyKanzhelev

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