* Updating the Microsoft.Net.Sdk & Microsoft.Net.Sdk.Web versions
* Fixed merge conflicts. Had to re-update the Sdk version in one place.
* re-migrate dotnet.dll
* Revert Performance Test Projects
* Fix test test
* Add missing WithRuntime
* Disable failing test test
* Upgrade MSBuild references to 15.1.0-preview-000370-00
* Custom logger for MSBuild to receive telemetry events
Had to make the telemetry session ID a static variable so that the forwarding app could use it.
I've tested this all manually and will be writing tests after everyone signs off on the implementation here.
