CRI-O: fix unqualified-search registries

[krystianmlynek]

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind api-change

/kind bug

/kind cleanup
/kind design
/kind documentation
/kind failing-test
/kind feature
/kind flake

What this PR does / why we need it:
If we set unqualified: true in crio_registries: e.g for docker.io playbook will fail and journalctl will show:

level=fatal msg="validating runtime config: invalid registries: loading drop-in registries configuration \"/etc/containers/registries.conf.d/01-unqualified.conf\": Near line 4 (last key parsed 'unqualified-search-registries'): expected value but found \"docker\" instead"

With this change entries in /etc/containers/registries.conf.d/01-unqualified.conf are quoted. E.g unqualified-search-registries = ['docker.io']

Which issue(s) this PR fixes:

Fixes #8495

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

CRI-O: fix unqualified-search registries

[k8s-ci-robot]

Hi @krystianmlynek. 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.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

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/test-infra repository.

[kalaytan]

Thanks for the commit. I tested your cleaner solution. It produces working config.

[oomichi]

@krystianmlynek Thanks for submitting this pull request.
Could you update Does this PR introduce a user-facing change? of this pull request message to
CRI-O: fix unqualified-search registries instead of NONE?

/ok-to-test

[krystianmlynek]

@oomichi
Message updated, thanks.

[oomichi]

Thanks for updating.

/lgtm

[cristicalin]

Thanks @krystianmlynek

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cristicalin, krystianmlynek

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [cristicalin]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment