More robust batonTimedWait test
More robust batonTimedWait test

Summary: every now and then this test fails. It is kind of expected - we measure time of execution and expect this measurement to be very precise.

Test Plan: run test 100 times in a row

Reviewed By: aap@fb.com

Subscribers: alikhtarov

FB internal diff: D1753955

Tasks: 5853316

glensc/mcrouter,facebook/mcrouter,leitao/mcrouter,synecdoche/mcrouter,zhlong73/mcrouter,evertrue/mcrouter,leitao/mcrouter,nvaller/mcrouter,easyfmxu/mcrouter,glensc/mcrouter,yqzhang/mcrouter,synecdoche/mcrouter,glensc/mcrouter,is00hcw/mcrouter,synecdoche/mcrouter,seem-sky/mcrouter,apinski-cavium/mcrouter,reddit/mcrouter,easyfmxu/mcrouter,zhlong73/mcrouter,tempbottle/mcrouter,tempbottle/mcrouter,tempbottle/mcrouter,leitao/mcrouter,synecdoche/mcrouter,seem-sky/mcrouter,is00hcw/mcrouter,zhlong73/mcrouter,nvaller/mcrouter,reddit/mcrouter,reddit/mcrouter,easyfmxu/mcrouter,apinski-cavium/mcrouter,apinski-cavium/mcrouter,nvaller/mcrouter,evertrue/mcrouter,yqzhang/mcrouter,zhlong73/mcrouter,is00hcw/mcrouter,seem-sky/mcrouter,facebook/mcrouter,reddit/mcrouter,apinski-cavium/mcrouter,facebook/mcrouter,evertrue/mcrouter,is00hcw/mcrouter,easyfmxu/mcrouter,nvaller/mcrouter,evertrue/mcrouter,seem-sky/mcrouter,leitao/mcrouter,glensc/mcrouter,yqzhang/mcrouter,yqzhang/mcrouter,facebook/mcrouter,tempbottle/mcrouter