Description

This PR adds memory management parameters to the Linux test execution pipeline to prevent out-of-memory (OOM) failures on Ubuntu 24.04 test agents. The changes implement specific garbage collection and parallelism restrictions to reduce memory consumption during test runs.

• Adds Linux-specific memory tuning parameters for .NET garbage collection
• Restricts CPU parallelism for test execution on Linux platforms
• Refactors the MSBuild command arguments for better maintainability

These changes are implemented to mitigate ADO agents from killing the process and causing Linux test step to be flaky.

Mandatory Checklist

• Please choose the target release of Azure PowerShell. (⚠️Target release is a different concept from API readiness. Please click below links for details.)

  • General release
  • Public preview
  • Private preview
  • Engineering build
  • No need for a release

• Check this box to confirm: I have read the Submitting Changes section of CONTRIBUTING.md and reviewed the following information:

• SHOULD update ChangeLog.md file(s) appropriately
  • Update src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md.
    • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header in the past tense.
  • Should not change ChangeLog.md if no new release is required, such as fixing test case only.
• SHOULD regenerate markdown help files if there is cmdlet API change. Instruction
• SHOULD have proper test coverage for changes in pull request.
• SHOULD NOT adjust version of module manually in pull request