Tests validate the error pattern matching logic added in previous commit,
ensuring we correctly identify:
1. **Standalone Node Patterns** (should trigger fallback):
- Classic: 'Corosync config does not exist'
- LXC ipcc errors: 'ipcc_send_rec[1] failed: Unknown error -1'
- Access control errors: 'Unable to load access control list'
- All patterns from GitHub issue #571
2. **Genuine Errors** (should NOT trigger fallback):
- Network timeouts
- Permission denied
- Command not found
Tests use real error messages from production GitHub issues to prevent
regressions. All 9 test cases pass.
Coverage:
- 6 standalone/LXC error patterns
- 3 genuine error cases (negative testing)
- References issue #571 for traceability
Related to #571
4f2e9055cd