Don't call mcrouter --help at the end of the build script
Don't call mcrouter --help at the end of the build script

Summary: mcrouter --help exits with nonzero status code, which causes the whole script to have nonzero code.

Test Plan: verify the script has 0 status on successful build

Reviewed By: pavlo@fb.com

Subscribers: meyering, alikhtarov

FB internal diff: D1561594

Tasks: 5175834

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