Tiny setting with a tiny sv2p model.

def rlmb_tiny_sv2p():
  """Tiny setting with a tiny sv2p model."""
  hparams = rlmb_ppo_tiny()
  hparams.generative_model = "next_frame_sv2p"
  hparams.generative_model_params = "next_frame_sv2p_tiny"
  hparams.grayscale = False
  return hparams