test(pkg/rfc2317): cover bare IPv6 and invalid-mask edge cases

[SAY-5]

What does it do ?

Adds three table-driven test cases to TestCidrToInAddr: bare IPv6 input (auto-appended /128), IPv4 mask not a multiple of 8, and IPv6 mask not a multiple of 4. Raises pkg/rfc2317 coverage from 86.7% to 93.3%.

Motivation

Part of #5150 (improve code coverage). Locks in the existing error/edge-case behavior of CidrToInAddr so future refactors do not silently regress these branches.

More

• Yes, this PR title follows Conventional Commits
• Yes, I added unit tests
• Yes, I updated end user documentation accordingly

[k8s-ci-robot]

Hi @SAY-5. Thanks for your PR.

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[mloiseleur]

/ok-to-test

[coveralls]

Coverage Report for CI Build 25827881005

Coverage increased (+0.02%) to 80.622%

Details

• Coverage increased (+0.02%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 1 coverage regression across 1 file.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

1 previously-covered line in 1 file lost coverage.

File	Lines Losing Coverage	Coverage
openshift_route.go	1	82.93%

---

Coverage Stats

Relevant Lines:	21390
Covered Lines:	17245
Line Coverage:	80.62%
Coverage Strength:	1451.94 hits per line

---

💛 - Coveralls

[mloiseleur]

/lgtm

[ivankatliarchuk]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ivankatliarchuk

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