Updating submodules
Summary:
GitHub commits:
https://github.com/facebook/fbthrift/commit/3f156207e8a6583d88999487e954320dc18955e6
https://github.com/facebook/folly/commit/135cff30a54b77523ff404a269a960ad981ff8df
https://github.com/facebook/rocksdb/commit/7aa66c704f71d74ff97090caee1d29c4dff22a21
https://github.com/facebookincubator/katran/commit/1dc41366445c0a1eef50e7329c5ea3069763c91b
https://github.com/pytorch/fbgemm/commit/9166d9f76755274970e77dc1386bcdd1bd91c9a4
Test Plan: n/a
Reviewed By: 2d2d2d2d2d
fbshipit-source-id: fb27e09060ecb4278b4002c02bce48fe9f4dc361
