[Breaking change] For dotnet test, switch -r to alias --runtime instead of --results-dir #21952
Description
Check it out:
rich@mazama:~$ dotnet test --help | grep -- -r
See https://aka.ms/vstest-report
testing. Implies --no-restore.
-r, --results-directory <RESULTS_DIR> The directory where the test results
--runtime <RUNTIME_IDENTIFIER> The target runtime to test for.
--no-restore Do not restore the project before-r should be used for --runtime for all verbs.
This is similar to #21389.
https://grep.app/search?q=dotnet%20test%20-r
https://grep.app/search?q=dotnet%20test%20--results-directory