Upstream cset we are merging from:

    commit 184a4a2d82f4f6f3cbcb1015bcdb32bebe73315c
    Author: Abhinav Sharma <abhinavsharma@fb.com>
    Date:   Thu Sep 14 11:40:08 2017 -0700

        Bump rocksdb submodule

        Summary:
        Bump rocksdb to include the fix for rocksdb.trx_info_rpl

Lots of conflicts, got the code to compile but tests are likely to
be broken