Nuget Configuration in ASP.NET Core 1.0

In our existing solution we have a NuGet.Config file with the following content:

<?xml version="1.0" encoding="utf-8"?> 
<configuration>   
    <solution>
        <add key="disableSourceControlIntegration" value="true" />           
    </solution>
    <config>
        <add key="repositorypath" value="NuGetPackages" />
    </config> 
</configuration>

With this config we tell NuGet to store all packages in the "NuGetPackages" folder. This works fine for all our existing Projects (WebApi, Libraries, ...), but if I add a new ASP.NET Core project, the packages are stored in the C:\Users\<username>\.dnx\packages folder.

Is there a way to change the package folder on solution level?

Thanks!!