Describe the bug

There are no TRX result files generated when using dotnet test, though there are with dotnet vstest.

Steps To Reproduce

1. Pull dotnet-test-trx branch of bdukes/mstest-demo
2. Run dotnet clean to ensure a clean environment
3. Run dotnet test --logger trx --results-directory dotnet-test-results
4. Run dotnet vstest **/*.Tests.dll /Logger:trx /ResultsDirectory:dotnet-vstest-results

Expected behavior

Both dotnet-test-results and dotnet-vstest-results folders are created with a .trx file with details of the test
run.

Actual behavior

Only dotnet-vstest-results is created with a .trx file.