Fix DNX naming issue for 'k test'.
Fix DNX naming issue for 'k test'.

- This re-enables CoreCLR testing when running build.cmd.

aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore