Allow configuring container log limits for Kubelet

[basvandenbrink]

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind api-change
/kind bug
/kind cleanup
/kind design
/kind documentation
/kind failing-test
/kind feature
/kind flake

What this PR does / why we need it:
So we can finetune the rotation behaviour of Kubelet.

Which issue(s) this PR fixes:

Fixes #6932

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Introduces kubelet_logfiles_max_nr and kubelet_logfiles_max_size variables

[k8s-ci-robot]

Hi @basvandenbrink. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[basvandenbrink]

/assign @chadswen

[mattymo]

10Mi is really small. Can it be 50Mi by default? Docker by default uses 100mb

[mattymo]

Sorry, this is actually Kubelet's default value at 10Mi. No objections.

[mattymo]

/lgtm
/approve

[floryut]

@basvandenbrink now that #6910 is merged, could you please rebase master ? Thank you!

[basvandenbrink]

Did a merge instead of a rebase. Fixed it and force pushed the changes.

[floryut]

/lgtm
As this was already lgtm-ed

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: basvandenbrink, floryut, mattymo

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[floryut]

/ok-to-test