Cleanup: use Set instead of map in endpointSlice utils

[nayihz]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

use sets.Set instead of map[discovery.AddressType]struct{} in endpointSlice utils

Which issue(s) this PR fixes:

part of #116731

Special notes for your reviewer:

Does this PR introduce a user-facing change?

None

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

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @czybjtu. 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.

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[aojea]

/ok-to-test

[danwinship]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 1d2d96a6a5242755583cc946077bd5aae72ca487

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: czybjtu, danwinship

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• pkg/controller/endpointslice/OWNERS [danwinship]

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