Remove DailyBuild in live test since it is already deprecated

[vidai-msft]

Description

This pull request removes support for the DailyBuild gallery/source from both the pipeline configuration and the PowerShell script used for installing test modules. Now, only Sign and PSGallery are valid options for the relevant parameters and logic.

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

[azure-client-tools-bot-prd]

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[Copilot]

Pull request overview

This pull request removes the deprecated DailyBuild option from the live test pipeline and module installation flow, leaving Sign and PSGallery as the only supported sources for installing AzPreview during live tests.

Changes:

• Removed DailyBuild from InstallLiveTestAzModules.ps1 parameter validation and repository selection logic.
• Updated live-test pipeline templates to only download artifacts for Sign and removed the DailyBuild download branch.
• Changed the live-test pipeline default gallery from DailyBuild to Sign and removed DailyBuild from allowed values.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
tools/TestFx/Live/InstallLiveTestAzModules.ps1	Removes DailyBuild from ValidateSet and switch logic; keeps Sign/PSGallery paths.
.azure-pipelines/util/live-test-steps.yml	Removes DailyBuild artifact-download conditional branch; limits artifact download to Sign.
.azure-pipelines/live-test.yml	Removes DailyBuild from selectable values and updates the default to Sign.

Comments suppressed due to low confidence (1)

tools/TestFx/Live/InstallLiveTestAzModules.ps1:8

• $AzPackagesLocation is declared optional, but it is required when -Source Sign because it is passed to Register-PSRepository -SourceLocation. Add validation (e.g., throw a clear error when Source is Sign and AzPackagesLocation is null/empty) to avoid hard-to-diagnose failures when the script is invoked outside the pipeline.

    [Parameter()]
    [string] $AzPackagesLocation
)

[vidai-msft]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).