feat: make CLE timers configurable

[michaelasp]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Adds configurable timers to coordinated leader election, cleaning up TODOs.

Which issue(s) this PR is related to:

Special notes for your reviewer:

Adds flags to apiserver, wasn't entirely sure where to place this, looking for advice here.

Does this PR introduce a user-facing change?

Add configurable flags to kube-apiserver for coordinated leader election.

[k8s-ci-robot]

@michaelasp: The label(s) sig/####, sig/what, sig/this, sig/pr, sig/does, sig//, sig/why, sig/we, sig/need, sig/it: cannot be applied, because the repository doesn't have them.

In response to this:

What type of PR is this?

/kind feature
/sig

What this PR does / why we need it:

Adds configurable timers to coordinated leader election, cleaning up TODOs.

Which issue(s) this PR is related to:

Special notes for your reviewer:

Adds flags to apiserver, wasn't entirely sure where to place this, looking for advice here.

Does this PR introduce a user-facing change?

Add configurable flags to kube-apiserver for coordinated leader election.

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[k8s-ci-robot]

This issue is currently awaiting triage.

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[k8s-ci-robot]

Hi @michaelasp. Thanks for your PR.

I'm waiting for a kubernetes 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.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[michaelasp]

/assign @Jefftree

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: michaelasp
Once this PR has been reviewed and has the lgtm label, please assign sttts for approval. For more information see the Code Review Process.

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Needs approval from an approver in each of these files:

• pkg/controlplane/OWNERS

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[k8s-ci-robot]

@michaelasp: The label(s) sig/apimachinery cannot be applied, because the repository doesn't have them.

In response to this:

/sig apimachinery

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.