Fix Deterministic failover tests
Fix Deterministic failover tests

Summary: Fix Deterministic failover tests.

Reviewed By: vrishal

Differential Revision: D19394767

fbshipit-source-id: 0433101e08f45e57f6963e2cfb58eff5655633d6

facebook/mcrouter,facebook/mcrouter,facebook/mcrouter,facebook/mcrouter