[tf.data] Adding `drop_remainder` argument to `tf.data.Dataset.batch()` and...

[tf.data] Adding `drop_remainder` argument to `tf.data.Dataset.batch()` and `tf.data.Dataset.padded_batch()`, deprecating tf.contrib.data.batch_and_drop_remainder()` and `tf.contrib.data.padded_batch_and_drop_remainder()`.

PiperOrigin-RevId: 199871303