Summary:
Some flags used via make were not applied in the buckifier/targets file, causing some failures to be missed by testing infra ( ie the one fixed by #3434 )
Closes https://github.com/facebook/rocksdb/pull/3452

Differential Revision: D7457419

Pulled By: gfosco

fbshipit-source-id: e4aed2915ca3038c1485bbdeebedfc33d5704a49