message: Add and to tensorrt CODEOWNERS
diff: /tensorflow/contrib/slim/ @sguada @thenbasilmanran
  /tensorflow/contrib/stateless/ @girving @alextp
  /tensorflow/contrib/tensor_forest/ @gilberthendry @thomascolthurst @yupbank
  -/tensorflow/contrib/tensorrt/ @aaroey
  +/tensorflow/contrib/tensorrt/ @aaroey @smit-hinsu @azaks2
  # NEED OWNER: /tensorflow/contrib/testing/
  /tensorflow/contrib/timeseries/ @allenlavoie
  /tensorflow/contrib/tpu/ @frankchn @saeta @jhseu @sourabhbajaj
  