Update Moq to 4.11.0

[rynowak]

This is the latest version of Moq, should have a fix for
dotnet/aspnetcore#3569

[rynowak]

To verify this, I ran this locally with MVC. MVC has pretty substantial usage of Moq

[natemcmaster]

cc @Eilon for OSS approval

[Eilon]

Super approved!

[rynowak]

@natemcmaster @ryanbrandenburg - any advice about these cool build failures:

D:\a\1\s\build\repo.targets(229,5): error : The SDK 'Internal.AspNetCore.Sdk' specified could not be found. > D:\a\1\s\modules\Mvc\src\Microsoft.AspNetCore.Mvc.RazorPages\Microsoft.AspNetCore.Mvc.RazorPages.csproj [D:\a.dotnet\buildtools\korebuild\2.2.0-preview2-20181004.6\KoreBuild.proj]
2018-10-09T16:30:39.7512999Z D:\a\1\s\build\repo.targets(229,5): error : The SDK 'Internal.AspNetCore.Sdk' specified could not be found. > D:\a\1\s\modules\Scaffolding\test\VS.Web.CG.EFCore.Test\VS.Web.CG.EFCore.Test.csproj [D:\a.dotnet\buildtools\korebuild\2.2.0-preview2-20181004.6\KoreBuild.proj]
2018-10-09T16:30:43.5434313Z Finished design-time build in 45311ms

[ryanbrandenburg]

@natemcmaster thinks we've fixed it with #1469.

[natemcmaster]

Um, where do we get Moq 4.11? The latest on nuget.org is 4.10