Base setting with sv2p as world model.

def rlmb_base_sv2p():
  """Base setting with sv2p as world model."""
  hparams = rlmb_base()
  hparams.learning_rate_bump = 1.0
  hparams.generative_model = "next_frame_sv2p"
  hparams.generative_model_params = "next_frame_sv2p_atari"
  return hparams