[Storage] Add STD docstrings to CCLM tests

[jpeimer]

What this PR does / why we need it:

Add STD docstrings to CCLM tests

Which issue(s) this PR fixes:

Special notes for reviewer:

Assisted-by: Claude noreply@anthropic.com

jira-ticket:

Summary by CodeRabbit

• Documentation
  • Added detailed scenario documentation to several migration-related tests, including preconditions, steps, and expected outcomes.
  • Improved clarity for coverage of multiple VM migrations, Windows VM with vTPM, and cross-storage-class migration cases.

[coderabbitai]

📝 Walkthrough

Walkthrough

This pull request adds multi-line docstrings (Preconditions/Steps/Expected sections) to test classes and methods in test_cclm.py, covering three cross-cluster live migration scenarios. No test logic, signatures, decorators, or verification calls are modified.

Changes

Test Documentation for Cross-Cluster Live Migration

Layer / File(s)	Summary
Several VMs migration scenario tests/storage/cross_cluster_live_migration/test_cclm.py	Docstrings added to TestCCLMSeveralVMs class and methods covering migration wait, file persistence, VM stop, intra-target compute live migration, and deletion verification.
Windows VM with vTPM scenario tests/storage/cross_cluster_live_migration/test_cclm.py	Docstrings added to Windows VM migration test methods covering migration wait, stopped-state check, intra-target live migration, and deletion.
StorageA to StorageB migration scenario tests/storage/cross_cluster_live_migration/test_cclm.py	Docstrings added to TestCCLMFromStorageAtoB class and methods covering migration wait, boot-id comparison, file persistence, stopped-state check, intra-target live migration, and deletion.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Related Issues: None specified.

Related PRs: None specified.

Suggested labels: documentation, tests

Suggested reviewers: None specified.

---

CRITICAL: None found — no functional or behavioral code was touched here, so there's zero risk of breaking test execution. 🎉

MEDIUM: Since these are pure docstring additions, double-check consistency in the Preconditions/Steps/Expected formatting across all methods so future contributors follow the same pattern — nothing worse than a docstring style that looks like it was written by three different interns on three different coffee levels.

LOW: Consider whether these docstrings could eventually be extracted into shared test-plan documentation to avoid duplication between similar scenario classes (SeveralVMs, Windows, StorageA→B) — but that's a nice-to-have, not a blocker.

🐰 hops through the test file, leaving trails of docstrings behind
"No logic touched, no asserts bent,
just words explaining what tests meant!"
a rabbit's job, both neat and small,
documentation for one and all. 🐇📝

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Caution

Pre-merge checks failed

Please resolve all errors before merging. Addressing warnings is optional.

• Ignore

❌ Failed checks (2 errors)

Check name	Status	Explanation	Resolution
Description check	❌ Error	The template is only partially filled; the issue section is blank and the jira-ticket field still contains a placeholder comment.	Add the issue(s) or write NONE, and replace the jira-ticket placeholder with a real Jira URL or NONE.
Stp Link Required	❌ Error	FAIL: This is a new test file under tests/, but its docstrings contain only 'Jira epic:'; no exact STP:/RFE:/Jira: line appears, so the traceability link requirement is unmet.	Add an exact STP:/RFE:/Jira: line in the module, class, or test docstring; if using Jira:, add # <skip-jira-utils-check> on the same line.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is concise and accurately describes the CCLM test docstring update.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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🔥 Problems

Linked repositories: Your configuration references 1 linked repositories, but your current plan allows 0. Analyzed ``, skipped RedHatQE/openshift-virtualization-tests-design-docs.

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