Summary:
Haven't seen any production issues with new Bloom filter and
it's now > 1 year old (added in 6.6.0).

Updated check_format_compatible.sh and HISTORY.md

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8017

Test Plan: tests updated (or prior bugs fixed)

Reviewed By: ajkr

Differential Revision: D26762197

Pulled By: pdillinger

fbshipit-source-id: 0e755c46b443087c1544da0fd545beb9c403d1c2