Finally got the PME signing on non-Windows to work. The SC ID is different for windows and non-windows, so we need to split the install step to account for this. We have to split the steps since the agent OS is not available at parse time.

To double check:

• The right tests are in and the right validation has happened. Guidance: https://github.com/dotnet/arcade/blob/main/Documentation/Validation.md