title: Unable to execute Nunit 3 .Net Core tests on VSTS with Test Plan option
body: <p>My story is that I'm trying to setup VSTS build step to run couple of NUnit test that are attached to test plan on .Net Core 2.0. And there absolutely no info how to do it correctly (though I managed to run tests but without the test plan which I need). I'm trying different solutions and combinations (I managed to get it working but on .net full framework, using infor from this post <a href="https://stackoverflow.com/questions/36622707/error-while-executing-run-functional-test-task-in-vsts">Error while executing Run Functional Test task in VSTS</a>). I have read that one way to fix for .Net core it is to use vstest.console.exe from C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\Extensions\TestPlatform\vstest.console.exe but I receive this weird error now. </p>
  
  <p>"Could not load type 'Microsoft.VisualStudio.TestPlatform.Common.FilterExpressionWrapper' from assembly 'Microsoft.VisualStudio.TestPlatform.Common, Version=15.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.":</p>