Upgrading the netcoreapp2.x and netcoreapp3.0 build configurations to netcoreapp3.1#53358

ViktorHofer merged 2 commits intodotnet:maindotnet/runtime:mainfrom

ViktorHofer:UpgradeToNetCoreApp31ViktorHofer/runtime:UpgradeToNetCoreApp31Copy head branch name to clipboard