Sonarqube-roslyn-sdk deprecation

[Rouke.Broersma.IS (Rouke Broersma)]

See: Customer C# rules are these still possible?

I am mainly asking because we need this pr merged to be able to keep using sq roslyn sdk as we provide services on linux now as well as windows, and the linked issue is blocking for linux support:

Replaces the back slash, to allow the zip file to be unzipped in linux