Dev: corosync: Add corosync health check

[nicholasyang2022]

Introduce the corosync health check under 'crm cluster health corosync'.

• Add crmsh/corosync_healthcheck.py containing local configuration
  validity, cross-node consistency, quorum status, link status, and Node ID
  mapping validation.
• Implement ui_cluster.py integration for the 'corosync' health component.
• Write test/unittests/test_corosync_healthcheck.py and test_ui_cluster.py
  for comprehensive unit test coverage.
• Update doc/crm.8.adoc with help information and documentation.
• Add functional behavior tests in test/features/corosync_ui.feature.

[nicholasyang2022]

Output examples:

> sudo crm cluster health corosync
[PASS] Validate Corosync Configuration File
[PASS] Validate Corosync Configuration File Consistency
[PASS] Check Quorum Status
[FAIL] Check Corosync Links Status
       Corosync link(s) are not operational:
       Link 1 to node 2 has status 'disconnected'.
       Recommended Action: Check network connectivity and corosync configuration/service on the affected nodes.
[PASS] Check Node ID to Node Name Mapping

> sudo crm cluster health corosync --local --json
{"returncode": 1, "results": [{"check_name": "Validate Corosync Configuration File", "checked_nodes": ["ha-3-1"], "returncode": 0, "result_description": null, "recommended_action": null}, {"check_name": "Check Quorum Status", "checked_nodes": ["ha-3-1"], "returncode": 0, "result_description": null, "recommended_action": null}, {"check_name": "Check Corosync Links Status", "checked_nodes": ["ha-3-1"], "returncode": 1, "result_description": "Corosync link(s) are not operational:\nLink 1 to node 2 has status 'disconnected'.", "recommended_action": "Check network connectivity and corosync configuration/service on the affected nodes."}, {"check_name": "Check Node ID to Node Name Mapping", "checked_nodes": ["ha-3-1"], "returncode": 0, "result_description": null, "recommended_action": null}]}

[codecov]

Codecov Report

❌ Patch coverage is 95.47170% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 70.71%. Comparing base (0353d18) to head (0432bcb).
⚠️ Report is 10 commits behind head on master.

Files with missing lines	Patch %	Lines
crmsh/corosync_healthcheck.py	95.28%	10 Missing ⚠️
crmsh/ui_cluster.py	96.22%	2 Missing ⚠️

Additional details and impacted files

Flag	Coverage Δ
integration	55.58% <76.98%> (+0.19%)	⬆️
unit	52.92% <92.45%> (+0.44%)	⬆️

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Files with missing lines	Coverage Δ
crmsh/ui_cluster.py	73.96% <96.22%> (+1.99%)	⬆️
crmsh/corosync_healthcheck.py	95.28% <95.28%> (ø)

... and 1 file with indirect coverage changes

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