Reenable test since dotnet/corefx#4274 is fixed
Reenable test since dotnet/corefx#4274 is fixed

sean-gilliam/msbuild,Microsoft/msbuild,AndyGerlicher/msbuild,rainersigwald/msbuild,Microsoft/msbuild,cdmihai/msbuild,jeffkl/msbuild,mono/msbuild,chipitsine/msbuild,chipitsine/msbuild,cdmihai/msbuild,chipitsine/msbuild,sean-gilliam/msbuild,rainersigwald/msbuild,cdmihai/msbuild,jeffkl/msbuild,AndyGerlicher/msbuild,AndyGerlicher/msbuild,mono/msbuild,rainersigwald/msbuild,jeffkl/msbuild,Microsoft/msbuild,jeffkl/msbuild,mono/msbuild,chipitsine/msbuild,sean-gilliam/msbuild,mono/msbuild,sean-gilliam/msbuild,Microsoft/msbuild,cdmihai/msbuild,rainersigwald/msbuild,AndyGerlicher/msbuild