title: nuget.config is ignored, specifically the repositoryPath
body: <p>Visual Studio 2015 ignores my <code>nuget.config</code> that lies in the solution directory. This file has the following content:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;settings&gt;
    &lt;repositoryPath&gt;../packages/nuget&lt;/repositoryPath&gt;
  &lt;/settings&gt;
  </code></pre>
  
  <p>Visual Studio however simply puts all packages into the packages folder in the solution directory.</p>
  
  <p>This file has worked fine for years when using Visual Studio 2013. Am I missing something?</p>
  
  <p>I am using the latest version of the NuGet extension (3.2)</p>