Add Bert_large (#1321)
Summary:
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1321
Useful for testing FSDP, where we want to test on large models.
Test Plan: Imported from OSS
Reviewed By: wconstab
Differential Revision: D41478058
Pulled By: davidberard98
fbshipit-source-id: 11e14a61967236de159811e80e6a89dc45d9a507
