Revert "Strip 'v' from dotnet versions"
Revert "Strip 'v' from dotnet versions"

This reverts commit 6f3a04b14440823b385edeead4039760631fbf9b.

cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci