Pack targets are no longer being overridden on adding a package reference to NuGet.Build.Tasks.Pack nupkg

[rohit21agrawal]

out.txt
Repro steps:
dotnet new classlib
Add a package reference to NuGet.Build.Tasks.Pack nupkg 4.4.0-preview1-4422 (nuget-build feed on myget)
dotnet pack (using dotnet 2.0 RTM)

The pack targets that are shipped with dotnet sdk 2.0 end up being used instead of the ones from the nupkg.

attached a diag log from packing the csproj (you can search for the resolved value of the property NuGetBuildTasksPackTargets)

CC: @nguerrera @dsplaisted

[rohit21agrawal]

ping...

[rainersigwald]

I think this is just what I fixed in #1526 (it seems to work on my machine with that patched).