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

[dsplaisted]

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