Lacking msbuild.exe coverage in testing scenarios

[benvillalobos]

We don't have test coverage for the net472 scenario in our testing.

• Create a windows leg for CI
• Ensure msbuild is installed on it
• Create/duplicate/modify EndToEnd_NoAPI for the net472 scenario (should just need to change the actual publish command args)

The command line I use to run the net472 scenario:

msbuild /t:Publish /p:RuntimeIdentifier=linux-x64 /p:Configuration=Release /p:PublishProfile=DefaultContainer

[baronfel]

It's going to be hard to test the actual push to docker daemons here - the Windows Github Actions runners don't have Docker installed due to licensing. We could probably mark tests with a trait for those that require a running Registry and don't enable them in CI to at least get partial coverage on Windows. We have similar problems on macOS.

[baronfel]

This was done in #349