Updating submodules
Updating submodules

Summary:
GitHub commits:

https://github.com/facebook/folly/commit/b0e23aef4f6a9056d38f6280c094f358b16f2450
https://github.com/facebook/proxygen/commit/f2a1ea57358ce870edd07a6ad290f1c79d85ea82
https://github.com/facebook/rocksdb/commit/24498ab1eceeab5b1eba65f64a9b78a272efc42f
https://github.com/facebook/watchman/commit/b1f2c4a01b0198b8642e7a18f52c243194b01857
https://github.com/facebookincubator/katran/commit/e45303acc23fe75d61130de6f76e141aca08f82f

Reviewed By: 2d2d2d2d2d

fbshipit-source-id: 1bb2b254a02cdb6b5666eba2a765564adf5fac97

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