VIRTWINKVM-1855：Add --tag-suffix option to prevent tag name conflicts

[menli820]

1. Add new --tag-suffix CLI option to allow custom tag suffixes
2. Modify tag generation in HCKTest to append suffix when provided
3. Prevents naming conflicts when multiple users share a controller

[gemini-code-assist]

Summary of Changes

Hello @menli820, 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 enhances the HCK-CI testing framework by introducing a new --tag-suffix command-line option. This option allows users to append a custom string to the automatically generated HCK-CI tags. The primary purpose of this change is to mitigate tag name conflicts, especially in shared controller environments, by ensuring that each test run can have a uniquely identifiable tag.

Highlights

• New CLI Option: Introduced --tag-suffix as a new command-line interface option, allowing users to specify a custom suffix for HCK-CI tags.
• Tag Generation Logic: Modified the HCKTest module to incorporate the provided --tag-suffix into the generated HCK-CI tag, appending it to the base tag if present.
• Conflict Prevention: The addition of the tag suffix helps prevent naming conflicts when multiple users are sharing a test controller, ensuring unique identification for test runs.

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[gemini-code-assist]

Code Review

This pull request introduces a --tag-suffix command-line option to prevent tag name conflicts, which is a valuable addition for environments with multiple users. The implementation is straightforward, adding the option in lib/cli.rb and applying it in lib/engines/hcktest/hcktest.rb. The code is clean and directly addresses the issue. I have one suggestion to improve the robustness of the suffix handling by trimming whitespace.

[menli820]

@kostyanf14 please help review it when you free, thanks

./bin/auto_hck --verbose test --platform Win2025x64_host --drivers pvpanic --driver-path /usr/share/virtio-win/drivers/by-driver/pvpanic/2k25/amd64/ --tag-suffix run1