migrate experimental-peer-skip-client-san-verification flag to feature gate

[wodeyoulai]

Please read https://github.com/etcd-io/etcd/blob/main/CONTRIBUTING.md#contribution-flow.

issue #19062

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[k8s-ci-robot]

Hi @wodeyoulai. Thanks for your PR.

I'm waiting for a etcd-io 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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[siyuanfoundation]

I don't think this PR is correct.
Can you find the original PR that added this flag and change the owner to that author? Thanks!

[wodeyoulai]

Sorry.I've found the original author. I will update the PR with the correct owner shortly.

[siyuanfoundation]

/ok-to-test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.80%. Comparing base (5d47d7f) to head (95a1f1f).
Report is 29 commits behind head on main.

Additional details and impacted files

Files with missing lines	Coverage Δ
server/embed/etcd.go	75.90% <100.00%> (+0.04%)	⬆️
server/etcdmain/config.go	71.79% <ø> (ø)
server/features/etcd_features.go	60.00% <ø> (ø)

... and 31 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #19225      +/-   ##
==========================================
+ Coverage   68.76%   68.80%   +0.04%     
==========================================
  Files         420      420              
  Lines       35650    35650              
==========================================
+ Hits        24514    24530      +16     
+ Misses       9714     9689      -25     
- Partials     1422     1431       +9     

---

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[ahrtr]

Please signoff the commit.

[ahrtr]

Please signoff the commit.

read https://github.com/etcd-io/etcd/pull/19225/checks?check_run_id=35810123123

git rebase HEAD~2 --signoff
git push --force-with-lease origin feat_gate

[ahrtr]

We might not need to migrate this flag, we just need to rename it to --peer-skip-client-san-verification. Both the experimental and non-experimental exist for 3.6, and remove the experimental flag in 3.7.

[wodeyoulai]

@ahrtr Understand. If you have decided to keep both flags , I can close this PR.

[k8s-ci-robot]

@wodeyoulai: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-etcd-e2e-386	95a1f1f	link	true	/test pull-etcd-e2e-386

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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. I understand the commands that are listed here.

[siyuanfoundation]

@ahrtr Understand. If you have decided to keep both flags , I can close this PR.

No need to close the PR. Can you repurpose the PR to migrate the flag to one without the prefix? like #19156?

Thank you!