api/server: Migrate tests to testify/assert
api/server: Migrate tests to testify/assert

mmussomele/quilt,LuiseV/quilt,stevenlin598/quilt,tejasmanohar/quilt,NetSys/quilt,tejasmanohar/quilt,ejj/quilt-dev,stevenlin598/quilt,mmussomele/quilt,kklin/quilt,stevenlin598/quilt,NetSys/quilt,ejj/quilt-dev,PenguinToast/quilt,PenguinToast/quilt,LuiseV/quilt,stevenlin598/quilt,stevenlin598/quilt,kklin/quilt,kelda/kelda,kelda/kelda,tejasmanohar/quilt,quilt/quilt,kklin/kelda,PenguinToast/quilt,kklin/quilt,mmussomele/quilt,quilt/quilt,kayousterhout/quilt,kklin/quilt,LuiseV/quilt,kklin/kelda,LuiseV/quilt,kklin/kelda,stevenlin598/quilt,PenguinToast/quilt,kayousterhout/quilt,ejj/quilt-dev,quilt/quilt,mmussomele/quilt,LuiseV/quilt,mmussomele/quilt,kelda/kelda,mmussomele/quilt,NetSys/quilt,NetSys/quilt,kayousterhout/quilt,tejasmanohar/quilt,NetSys/quilt,kelda/kelda,kayousterhout/quilt,quilt/quilt,PenguinToast/quilt,ejj/quilt-dev,kklin/kelda