quantize_rnn_modules in ensemble_export (#20365)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20365
Enable quantization of `torch.nn.LSTM` module in the decoder of PyTorch natively exported beam search models.
Reviewed By: jmp84
Differential Revision: D15260631
fbshipit-source-id: bbdd3a30c2c2110986eb7aa7ff11ce1c9090ddf4
