Report api request throttling at v=3

[RobertKrawitz]

What type of PR is this?
/kind feature

What this PR does / why we need it: api request throttling can have serious consequences, but is reported at v=4 so not visible in logs in default configuration.

Which issue(s) this PR fixes:

Fixes #80647

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

API request throttling (due to a high rate of requests) is now reported in the kubelet (and other component) logs by default.  The messages are of the form

Throttling request took 1.50705208s, request: GET:<URL>

The presence of large numbers of these messages, particularly with long delay times, may indicate to the administrator the need to tune the cluster accordingly.

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

[RobertKrawitz]

/sig node

/cc @sjenning

[RobertKrawitz]

/retest

[mattjmcnaughton]

/lgtm

thanks :)

/test pull-kubernetes-node-e2e-containerd

[roycaihw]

/cc @caesarxuchao

[fejta-bot]

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[fejta-bot]

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/lifecycle rotten

[RobertKrawitz]

/remove-lifecycle rotten

[wojtek-t]

I initially thought that we risk spamming logs with it, but we basically won't produce more logs than API calls, which is completely fine to me.

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: RobertKrawitz, wojtek-t

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[wojtek-t]

/test pull-kubernetes-e2e-kind