Runtime property is missing for 'dotnet pack', 'dotnet run' and 'dotnet clean'

[daveMueller]

The dotnet pack, run, clean settings are missing the RunTime Property which is needed for RID build.
e.g.
https://github.com/cake-build/cake/blob/develop/src/Cake.Common/Tools/DotNetCore/Clean/DotNetCoreCleanSettings.cs

dotnet clean -h
Usage: dotnet clean [options] <PROJECT>

Arguments:
  <PROJECT>   The project file to operate on. If a file is not specified, the command will search the current directory for one.

Options:
  -h, --help                            Show command line help.
  -o, --output <OUTPUT_DIR>             The directory containing the build artifacts to clean.
  -f, --framework <FRAMEWORK>           The target framework to clean for. The target framework must also be specified in the project file.
  -r, --runtime <RUNTIME_IDENTIFIER>    The target runtime to clean for.
  -c, --configuration <CONFIGURATION>   The configuration to clean for. The default for most projects is 'Debug'.
  -v, --verbosity <LEVEL>               Set the MSBuild verbosity level. Allowed values are q[uiet], m[inimal], n[ormal], d[etailed], and diag[nostic].

This is related to #2556.