Add Rocky Linux 8 support for vagrant and CI

[oomichi]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

To test Kubespray on Rocky Linux 8 with vagrant, this adds it to the Vagrantfile and CI configuration file.

Does this PR introduce a user-facing change?:

Add Rocky Linux 8 support

[oomichi]

+ echo 'Generate current file...'
Generate current file...
+ ./tests/scripts/md-table/main.py
+ echo 'Compare docs/ci.md with actual tests in tests/files/*.yml ...'
Compare docs/ci.md with actual tests in tests/files/*.yml ...
+ cmp docs/ci.md tmp.md
docs/ci.md tmp.md differ: byte 338, line 10

/hold

[oomichi]

/ok-to-test

[cristicalin]

I just rebuilt the rocky image but it seems indeed to be missing sudo which is rather odd and should be reported to the rocky team to be fixed.
I just patched the image to add the sudo dependency since I don't see any sane system missing sudo but we need to be mindful of this when rebuilding the images or if we do an automated job for it.

[oomichi]

I just rebuilt the rocky image but it seems indeed to be missing sudo which is rather odd and should be reported to the rocky team to be fixed. I just patched the image to add the sudo dependency since I don't see any sane system missing sudo but we need to be mindful of this when rebuilding the images or if we do an automated job for it.

Thank you so much for creating a new image with sudo command @cristicalin 🙏
Let me try kicking the job again.

[oomichi]

Interesting, the rockylinux8 image doesn't contain hostname command also.
That seems super minimum image I never see 😅

TASK [bootstrap-os : Assign inventory name to unconfigured hostnames (non-CoreOS, non-Flatcar, Suse and ClearLinux, non-Fedora)] ***
task path: /builds/kargo-ci/kubernetes-sigs-kubespray/roles/bootstrap-os/tasks/main.yml:55
Friday 17 June 2022  17:27:03 +0000 (0:00:00.901)       0:00:30.946 *********** 
fatal: [instance-2]: FAILED! => {"changed": false, "msg": "Failed to find required executable \"hostname\" in paths: /home/kubespray/.local/bin:/home/kubespray/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin"}
fatal: [instance-1]: FAILED! => {"changed": false, "msg": "Failed to find required executable \"hostname\" in paths: /home/kubespray/.local/bin:/home/kubespray/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin"}

[oomichi]

@floryut @cristicalin Please take a look at this. Now that works 😃

[floryut]

/lgtm

Good job @oomichi 🚀

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: floryut, oomichi

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 [floryut,oomichi]

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

[cristicalin]

Wake the bot up

/ok-to-test