Automatically set test run title and log zip file to useful values

Currently we are defining the tasks to publish test results and create log files ourselves in order to give them useful names (ie the OS / configuration they correspond to):

https://github.com/dotnet/sdk/pull/3221#discussion_r283052731
https://github.com/dotnet/core-sdk/pull/1609

Arcade should automatically do this, or provide a way to set these names without having to define these tasks ourselves.

This may depend on #2038. More discussion of this issue is in #2525