Enable WinArm32 build

[gkhanna79]

This change enables building Core-Setup for WinArm32.

@schellap @ianhays PTAL

[ianhays]

I don't see anything that stands out as negative here. The changes to TestTargets.cs seem unnecessary as you can avoid tests by just not passing that target when you build, but they shouldn't cause issues. All in all this LGTM.

[gkhanna79]

Blocked on #462.

CC @weshaggard

[weshaggard]

LGTM - What is blocking this?

[gkhanna79]

@weshaggard The failures like the one below are the ones you are working to get fixed in your PR:

x64/tests/artifacts/2/StandaloneApp/bin/StandaloneApp Arguments: Exit Code: 134 StdOut: StdErr: Unhandled Exception: System.TypeLoadException: Could not load type 'System.IO.TextWriter' from assembly 'System.IO, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. at System.Console.WriteLine(String value) at StandaloneApp.Program.Main(String[] args)

Once your PR merges, I will rebase against it to ensure this is green and then merge.

[weshaggard]

Ah yes. that is triggered by you taking the newer CoreCLR package which isn't backwards compatible with 1.0. We are currently blocked on getting an updated CLI to fix this correctly.

[gkhanna79]

Closing in favor of #526