MSBuild VSBuild 118

Hotfix created from branch: refs/heads/releases/m118
Commit: 1fb1744

The purpose of this hotfix is to fix the bug calling vswhere (does not find build tools product) and vs fallback issues

Use TFX to upload to your account. You will need to follow the instructions on the TFX repo to:

1. Install TFX
2. Login using a PAT
3. Be in the admin role at the "All pools" level.
4. Use the tfx build tasks upload command

Details on each of the steps are listed on the TFX repo and in or linked from the README.md