Remove immutable flag from /var/lib/kubelet subdirs

[emiran-orange]

What type of PR is this?
/kind bug

What this PR does / why we need it:
Before removing /var/lib/kubelet, make sure immutable flag (chattr -i) is removed from /var/lib/kubelet's tree.
As a matter of fact, file module does not change attributes before removing the directory (hence the separate task before).

We need it because some CSI drivers set immutable flag on mount directories (at least some leftovers of those CSI driver have been found) in /var/lib/kubelet, and shutil.rmtree (which is used in file module when state is "absent") simply does not remove most of /var/lib/kubelet if only one dir is immutable in, for example, /var/lib/kubelets/pods. That causes node join to fail afterwards.

Which issue(s) this PR fixes:
None that I know of

Special notes for your reviewer:
I initially planned to remove immutable flag from all the list of files/dirs in "reset | delete some files and directories" task but that would have meant creating them if missing, I hope you find this way better.

Does this PR introduce a user-facing change?:

Remove immutable flag from /var/lib/kubelet subdirs 

[k8s-ci-robot]

Hi @emiran-orange. 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]

packet_ubuntu20-calico-aio is failed like:

TASK [reset : reset | Remove immutable flag from /var/lib/kubelet subdirs] *****
task path: /builds/kargo-ci/kubernetes-sigs-kubespray/roles/reset/tasks/main.yml:256
Monday 19 December 2022  23:34:30 +0000 (0:00:00.108)       0:01:57.396 ******* 
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: Exception: Error while setting attributes: /usr/bin/chattr: Operation not supported while reading flags on /var/lib/kubelet/pods/1b3df0ad-d9bb-4e9a-bb5b-662da4d71a9e/volumes/kubernetes.io~configmap/config-volume/..data
fatal: [instance-1]: FAILED! => {"changed": false, "details": "Error while setting attributes: /usr/bin/chattr: Operation not supported while reading flags on /var/lib/kubelet/pods/1b3df0ad-d9bb-4e9a-bb5b-662da4d71a9e/volumes/kubernetes.io~configmap/config-volume/..data\n", "gid": 0, "group": "root", "mode": "0777", "msg": "chattr failed", "owner": "root", "path": "/var/lib/kubelet/pods/1b3df0ad-d9bb-4e9a-bb5b-662da4d71a9e/volumes/kubernetes.io~configmap/config-volume/..data", "size": 32, "state": "link", "uid": 0}

[emiran-orange]

@oomichi Arff sorry for that, I split things into two tasks. That seems to work better

[oomichi]

Thanks for updating.

/ok-to-test
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: emiran-orange, oomichi

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[yankay]

Thanks @emiran-orange
/lgtm