[2.18] nerdctl insecure registry config

[tmurakam]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Backport #8339 to 2.18-release
Cherry-pick 24f1402

Which issue(s) this PR fixes:

Fixes #8339 on 2.18-release

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[containerd] nerdctl insecure registry support

[k8s-ci-robot]

Hi @tmurakam. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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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[oomichi]

/retitle [2.18] nerdctl insecure registry config

[k8s-ci-robot]

@tmurakam: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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[oomichi]

Thanks for backporting.

/ok-to-test
/lgtm

[cristicalin]

/approve

[oomichi]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cristicalin, oomichi, tmurakam

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[sathieu]

@tmurakam @cristicalin This PR as reverted part of 7fffe67 from #8380. A merge conflict was probably fixed too quickly.