Add imagestream for .NET Core 1.1
Add imagestream for .NET Core 1.1

redhat-developer/s2i-dotnetcore,omajid/s2i-dotnetcore,omajid/s2i-dotnetcore,yzu-gkg/fstest,yzu-gkg/fstest,redhat-developer/s2i-dotnetcore,yzu-gkg/fstest,yzu-gkg/fstest,omajid/s2i-dotnetcore,redhat-developer/s2i-dotnetcore,yzu-gkg/fstest