Introduce control plane testing.

[sathlan]

Just before starting the update and for the entire update, this
continuously:

1. creates a vm;
2. attach a volume (optional) and a fip to ip
3. ssh to it
4. destroy it
5. restart from 1.

This give a good level of confidence that the openstack API is still
reachable during the update.

---

As a pull request owner and reviewers, I checked that:

• Appropriate testing is done and actually running
• Appropriate documentation exists and/or is up-to-date:
  • README in the role
  • Content of the docs/source is reflecting the changes

[github-actions]

Thanks for the PR! ❤️
I'm marking it as a draft, once your happy with it merging and the PR is passing CI, click the "Ready for review" button below.

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/a95c68f13cd74c1489e2ef3e90153dab

✔️ openstack-k8s-operators-content-provider SUCCESS in 1h 33m 07s
✔️ podified-multinode-edpm-deployment-crc SUCCESS in 1h 16m 15s
❌ cifmw-crc-podified-edpm-baremetal RETRY_LIMIT in 10m 29s
✔️ noop SUCCESS in 0s
✔️ cifmw-pod-ansible-test SUCCESS in 8m 54s
✔️ cifmw-pod-pre-commit SUCCESS in 7m 15s
✔️ cifmw-molecule-update SUCCESS in 4m 40s

[raukadah]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: raukadah

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[sathlan]

/cherry-pick 18.0.0-proposed

[openshift-cherrypick-robot]

@sathlan: #2169 failed to apply on top of branch "18.0.0-proposed":

Applying: Introduce control plane testing.
Using index info to reconstruct a base tree...
M	roles/update/tasks/create_test_files.yml
Falling back to patching base and 3-way merge...
Auto-merging roles/update/tasks/create_test_files.yml
CONFLICT (content): Merge conflict in roles/update/tasks/create_test_files.yml
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 Introduce control plane testing.
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

In response to this:

/cherry-pick 18.0.0-proposed

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-sigs/prow repository.

[sathlan]

/cherry-pick 18.0.0-proposed

[openshift-cherrypick-robot]

@sathlan: new pull request created: #2354

In response to this:

/cherry-pick 18.0.0-proposed

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-sigs/prow repository.