Tiny hparams suitable for CIFAR/etc.

def revnet_cifar_base():
  """Tiny hparams suitable for CIFAR/etc."""
  hparams = revnet_base()
  hparams.num_channels_init_block = 32
  hparams.first_batch_norm = [False, True, True]
  hparams.init_stride = 1
  hparams.init_kernel_size = 3
  hparams.init_maxpool = False
  hparams.strides = [1, 2, 2]
  hparams.batch_size = 128
  hparams.weight_decay = 1e-4

  hparams.learning_rate = 0.1
  hparams.learning_rate_cosine_cycle_steps = 5000
  return hparams