Create a script to generate the Microsoft.WSL.TestData nuget package

[Blue (OneBlue)]

Summary of the Pull Request

This change adds a script to generate the testdata nuget folder. This will make it easier to update that package in the future

PR Checklist

• Closes: Link to issue #xxx
• Communication: I've discussed this with core contributors already. If work hasn't been agreed, this work might be rejected
• Tests: Added/updated if needed and all pass
• Localization: All end user facing strings can be localized
• Dev docs: Added/updated if needed
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

[Copilot]

Pull request overview

Adds a PowerShell workflow to generate the Microsoft.WSL.TestData NuGet package.

Changes:

• Generates architecture-specific Docker images and Azure Linux RPMs.
• Packages generated test data with NuGet.
• Normalizes registry entrypoint line endings.
• Removes superseded helper scripts.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Summary
tools/test/pack-test-data.ps1	Removed superseded packaging helper.
tools/test/images/wslc-registry/Dockerfile	Normalizes registry entrypoint line endings.
tools/test/generate-test-data.ps1	Generates and packages test data; its shared working directory can be deleted or overwritten by concurrent invocations.
tools/test/download-test-data-rpms.ps1	Removed superseded RPM downloader.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.