dotnet sln add shouldn't create redundant solution folder

Repro Given file layout

Test.sln
src/
    Microsoft.AspNetCore/
         Microsoft.AspNetCore.csproj

dotnet sln add src/Microsoft.AspNetCore/Microsoft.AspNetCore.csproj

Expected Create a solution with this structure:

src/ (solution folder)
    Microsoft.AspNetCore.csproj

Actual Created a solution with this structure:

src/ (solution folder)
    Microsoft.AspNetCore/ (solution folder)
      Microsoft.AspNetCore.csproj

Using 1.0.0-preview5-004478

[natemcmaster]

Right. along with dotnet/sdk#7508, you end up with this:

But i would have expected this:

[jgoshi]

I’m going to do two things:

1. Don’t create a new solution folder every folder in the hierarchy that already exists as solution folder. This is issue dotnet/sdk#7508
2. Do not create a solution folder for the folder containing the project.