Use custom containerd socket with Flatcar

[hakman]

Flatar uses /run/docker/libcontainerd/docker-containerd.sock for the containerd socket as mentioned in flatcar/Flatcar#284.

This should fix the failing periodic test:
https://testgrid.k8s.io/kops-distros#kops-aws-distro-flatcar

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hakman

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 [hakman]

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

[rifelpet]

I wonder if this was a recent Flatcar change or if Flatcar always used this socket location and our containerd+Flatcar support just never worked
/lgtm
/hold if you think we should key off of the Flatcar OS version as well, otherwise feel free to remove this.

EDIT: oh I thought GHA would run on the merged result of the PR but apparently its still failing due to the copyright year issue so you'll need to rebase regardless.

[k8s-ci-robot]

New changes are detected. LGTM label has been removed.

[hakman]

Thanks for the review @rifelpet. Flatcar is a rolling release, so we only care about latest.
/hold cancel

[hakman]

/hold for now, to se if there is a change of approach in Flatcar defaults

[hakman]

This was good as a test run, but seem a more permanent fix will be required:
flatcar/Flatcar#284 (comment)

[hakman]

Closing in favor of #10540.
/close

[k8s-ci-robot]

@hakman: Closed this PR.

In response to this:

Closing in favor of #10540.
/close

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.