title: VSTS task "Publish Test Results" is not able to access $(System.DefaultWorkingDirectory) for test results
body: <p>The search folder path is $(System.DefaultWorkingDirectory) below is the error</p>
  
  <pre><code>==============================================================================
  2017-07-12T17:22:40.7168687Z Task         : Publish Test Results
  2017-07-12T17:22:40.7168687Z Description  : Publish Test Results to VSTS/TFS
  2017-07-12T17:22:40.7168687Z Version      : 2.0.1
  2017-07-12T17:22:40.7168687Z Author       : Microsoft Corporation
  2017-07-12T17:22:40.7168687Z Help         : [More Information](https://go.microsoft.com/fwlink/?LinkID=613742)
  2017-07-12T17:22:40.7168687Z ==============================================================================
  2017-07-12T17:22:41.1214206Z ##[warning]Failed to publish test results: Access to the path 'd:\a\1\s\DtlTestResults.trx' is denied.
  2017-07-12T17:22:41.1244177Z ##[section]Async Command Start: Publish test results
  2017-07-12T17:22:41.1244177Z ##[section]Async Command End: Publish test results
  2017-07-12T17:22:41.1244177Z ##[section]Finishing: Publish Test Results DtlTestResults.trx
  </code></pre>