Updating submodules
Updating submodules

Summary:
GitHub commits:

https://github.com/facebook/folly/commit/7fe6211c224ef6341303a463d46f6b938f8fa3b3
https://github.com/facebookincubator/katran/commit/24a845741809a1a47b8dd75bea4f73d6718e2713

Reviewed By: yns88

fbshipit-source-id: 5ae1f27525ec30f4d9ff1c4fa87e4d7ce98ee029

facebook/wangle,facebook/wangle,facebook/wangle