Revert "Fix headless unit test running"
Revert "Fix headless unit test running"

This reverts commit d2652f66c5cd09730a789373fe1cc0f51d357b7d.

That commit just made us not run the unit tests from Gulp any more.

spotify/threaddump-analyzer,spotify/threaddump-analyzer,rprabhat/threaddump-analyzer,rprabhat/threaddump-analyzer