Chore: add ipfamilies tweak functions

[mowangdk]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

Cleanup unit test. some finishing work about #116277

Which issue(s) this PR fixes:

None

Special notes for your reviewer:

None

Does this PR introduce a user-facing change?

NONE

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @mowangdk. 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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[mowangdk]

@thockin ptal, new added test cases cleanup

[thockin]

Thanks!

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 78fd66a7b470fd314ddb430319f76aafc55cfce5

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mowangdk, thockin

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Needs approval from an approver in each of these files:

• staging/src/k8s.io/cloud-provider/controllers/service/OWNERS [thockin]

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[thockin]

You're going to make this into the nicest test file in the codebase :)

[aojea]

/ok-to-test
/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: f4d518c003c6bf851db1ab6e8c64ffb7257b4b3d

[aojea]

/release-note none

[k8s-triage-robot]

The Kubernetes project has merge-blocking tests that are currently too flaky to consistently pass.

This bot retests PRs for certain kubernetes repos according to the following rules:

• The PR does have any do-not-merge/* labels
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You can:

• Review the full test history for this PR
• Prevent this bot from retesting with /lgtm cancel or /hold
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/retest

[k8s-triage-robot]

The Kubernetes project has merge-blocking tests that are currently too flaky to consistently pass.

This bot retests PRs for certain kubernetes repos according to the following rules:

• The PR does have any do-not-merge/* labels
• The PR does not have the needs-ok-to-test label
• The PR is mergeable (does not have a needs-rebase label)
• The PR is approved (has cncf-cla: yes, lgtm, approved labels)
• The PR is failing tests required for merge

You can:

• Review the full test history for this PR
• Prevent this bot from retesting with /lgtm cancel or /hold
• Help make our tests less flaky by following our Flaky Tests Guide

/retest