Incorrect package id case for PackageReference added by Package Manager console

[mrward]

Details about Problem

NuGet product used: Package Manager Console

NuGet version: 4.3.0.4199

VS version: VS 2017 15.3.0 Preview 3.0

Detailed repro steps so we can see the same problem

1. Create a .NET Core console project.
2. Open the Package Manager Console
3. Run: install-package newtonsoft.json

Expected result:

PackageReference added to .csproj with the correct case for the package id:

<PackageReference Include="Newtonsoft.Json" Version="10.0.3" />

Actual result:

Package id case seems to be taken from the install-package command line:

<PackageReference Include="newtonsoft.json" Version="10.0.3" />

Whilst this does not break anything it would probably be better that the PackageReference added should match what is added when using the Visual Studio manage packages UI.