[Develop][Test] Add integration test for the fixes of issues caused by cluster update and rollback failure

[hehe7318]

Description of changes

This is a cherry-pick PR of #7150

Add integration test to verify the following fixes work correctly:

• [F1] clustermgtd remains running after both update and rollback fail
  (expected when failure occurs after slurm reconfiguration, which is the safe section)
• [F2] cfn-hup does not enter an endless loop after rollback to a state older than 24h
• [F3] dna.json files are cleaned up after update and rollback failure

Test scenario:

1. Create cluster with 3 static compute nodes
2. Inject cfn-signal failure on head node (simulating expired wait condition)
3. Disable cfn-hup on CN1 before update (causes update to fail)
4. Trigger cluster update (add new queue)
5. Wait for CN2 to apply update, then disable its cfn-hup
6. Update fails (CN1 didn't update), rollback fails (CN2 won't rollback)
7. Verify: clustermgtd running, dna.json cleaned up, CN3 has correct config version, metadata_db.json updated, no cfn-hup endless loop

Tests

• Running and debugging

References

• Link to impacted open issues.
• Link to related PRs in other packages (i.e. cookbook, node).
• Link to documentation useful to understand the changes.

Checklist

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• Check if documentation is impacted by this change.

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