Support TRX test result format in test reporters

[pakrym]

dotnet vstest/dotnet test doesn't support producing xUnit XML.

It would be nice to be able to ingest TRX result files.

cc @alexperovich @anurse

[analogrelay]

Adding support for TRX files would significantly reduce our overhead when understanding test failures in Helix. Right now, engineers have to drill down through the mc.dot.net screens and it's very time consuming (and mostly impenetrable for external contributors). This is a high priority for our Helix adoption in ASP.NET (cc @Eilon).

[markwilkie]

@jonfortescue / @Chrisboh - you guys aware of this? Thoughts on next steps?

[Chrisboh]

We can add support for TRX files into Helix and get that work scheduled. @pakrym I do wonder though is this something that would meet your needs? According to @alexperovich you can just drop this with your run and it will produce the xunit output we would need.

[markwilkie]

Added to the Helix go-live Epic. Please move as appropriate as I can appreciate how this might be more urgent.

[jonfortescue]

Issue moved to dotnet/core-eng #5655 via ZenHub