Updating submodules
Updating submodules

Summary:
GitHub commits:

https://github.com/facebook/folly/commit/f0471228b89be4a399afcf0e9692c84754d06875
https://github.com/facebookincubator/katran/commit/5edd037348c9cf82589bef7a197ae5f16bb24b5f

Reviewed By: zpao

fbshipit-source-id: de988de589c3a2460bbe0310f578bc80c2a2a7b8

ReactiveSocket/reactivesocket-cpp,rsocket/rsocket-cpp,rsocket/rsocket-cpp,ReactiveSocket/reactivesocket-cpp,rsocket/rsocket-cpp,rsocket/rsocket-cpp,ReactiveSocket/reactivesocket-cpp