Lift ticks declaration to top level in Phabricator daemons

Summary: Ref T10811. This is a companion change for D16053, but affects the Phabricator version of this script.

Test Plan: Started daemons, ^C'd them, saw them handle the signal.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10811

Differential Revision: https://secure.phabricator.com/D16054