Summary: In light of the new option introduced by commit 806e26435037f5e2eb3b8c2d1e5f278a86fdb2ba where the database has an option to compact before flushing to disk, we want the stress test to test both sides of the option. Have made it to 'deterministically' and configurably change that option for reopens.
Test Plan: make db_stress; ./db_stress with some differnet options
Reviewers: dhruba, vamsi
Reviewed By: dhruba
CC: leveldb, sheki
Differential Revision: https://reviews.facebook.net/D9165
3b6653b1f8