Pass NuGet settings properties during nomination

[emgarten]

To allow setting fallback folders in the SDK restore nomination should send the following project properties:

• RestoreSources
• RestoreFallbackFolders
• RestorePackagesPath

More details on how restore is using these can be found here https://github.com/NuGet/Home/wiki/%5BSpec%5D-NuGet-settings-in-MSBuild

[natidea]

Fixed by #2269