Fix wrong constants in db_test_util
Fix wrong constants in db_test_util

Summary: Fix two constants in WaitFor() that multiply a value with 000 instead of 1000.

Test Plan: make clean all check

Reviewers: rven, anthony, yhchiang, aekmekji, sdong, MarkCallaghan, igor

Reviewed By: igor

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D47091

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