QemuHCK: Ignore no such process error on pid file release

[kostyanf14]

This can happened if AutoHCK was interrupted
and "nsenter" already exited

[gemini-code-assist]

Summary of Changes

Hello @kostyanf14, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request improves the stability of the QemuHCK module by addressing a specific error scenario during PID file release. It ensures that the system gracefully handles situations where the 'nsenter' process might have already terminated due to an interruption, preventing unnecessary crashes. Additionally, it cleans up the code by extracting argument construction into a dedicated helper method.

Highlights

• Error Handling: Implemented robust error handling to ignore 'No such process' errors (Errno::ESRCH) when releasing PID files. This prevents failures if the AutoHCK process was interrupted and the 'nsenter' process had already exited.
• Code Refactoring: Refactored the construction of 'nsenter' command arguments into a new private class method, self.nsenter_argv, enhancing code readability and modularity within the QemuHCK::Ns module.

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[gemini-code-assist]

Code Review

This pull request correctly handles a potential Errno::ESRCH error that could occur when releasing a PID file if the target process has already exited. This is achieved by wrapping the call in a begin...rescue block. Additionally, the logic for building the nsenter command arguments has been cleanly refactored into a new private method, which improves code structure. The changes are sound and enhance the robustness of the application. I have one minor suggestion to further refine the new helper method using a common Ruby idiom.