<fix>[compute]: always submit DeleteVmGC on rollback failure regardless of GC_ELIGIBLE

[zstack-robot-2]

Resolves: ZSTAC-68874

Target: 5.5.6

sync from gitlab !9181

[coderabbitai]

总体描述

虚拟机创建流程中的回滚处理逻辑被修改，使垃圾回收清理的提交从条件性（仅在OPERATION_FAILURE_GC_ELIGIBLE错误时）改为无条件性（在任何回滚失败时均提交）。

变化

集合 / 文件	总结
虚拟机回滚处理逻辑 compute/src/main/java/org/zstack/compute/vm/VmCreateOnHypervisorFlow.java	修改了rollback方法中的垃圾回收清理提交逻辑，将GC清理提交改为无条件执行；删除了原有的OPERATION_FAILURE_GC_ELIGIBLE条件分支；添加了GC提交的调试日志；保留了已存在GC跳过检查的逻辑。

估计审查工作量

🎯 2 (简单) | ⏱️ ~10 分钟

诗歌

🐰 垃圾要清理，无论风与雨，
回滚不侥幸，提交总要去，
逻辑更坚固，日志更清晰，
小小的改变，大大的智慧。✨

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Important

Pre-merge checks failed

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

❌ Failed checks (1 error, 2 warnings)

Check name	Status	Explanation	Resolution
Title check	❌ Error	PR标题为86个字符，超过了72个字符的限制要求。	缩短标题到72个字符以内，例如：'[compute]: always submit DeleteVmGC on rollback regardless of GC_ELIGIBLE'
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.
Merge Conflict Detection	⚠️ Warning	❌ Merge conflicts detected (3 files): ⚔️ compute/src/main/java/org/zstack/compute/vm/VmCreateOnHypervisorFlow.java (content) ⚔️ identity/src/main/java/org/zstack/identity/QuotaUtil.java (content) ⚔️ network/src/main/java/org/zstack/network/service/DhcpExtension.java (content) These conflicts must be resolved before merging into 5.5.6.	Resolve conflicts locally and push changes to this branch.

✅ Passed checks (1 passed)

Check name	Status	Explanation
Description check	✅ Passed	PR描述与变更集相关，包含了JIRA编号和同步来源，说明了修复的意图。

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch sync/ye.zou/fix/ZSTAC-68874

⚔️ Resolve merge conflicts (beta)

• Auto-commit resolved conflicts to branch sync/ye.zou/fix/ZSTAC-68874
• Create stacked PR with resolved conflicts
• Post resolved changes as copyable diffs in a comment

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