Make the regular expression, used in the init script for extracting the path to the PID file, more precise.
Make the regular expression, used in the init script for extracting the path to the PID file, more precise.

Fixes https://code.google.com/p/phusion-passenger/issues/detail?id=1060

phusion/passenger_apt_automation,LoveMondays/passenger_apt_automation,phusion/passenger_apt_automation,shaneog/passenger_apt_automation,phusion/passenger_apt_automation,LoveMondays/passenger_apt_automation,phusion/passenger_apt_automation,phusion/passenger_apt_automation,phusion/passenger_apt_automation,shaneog/passenger_apt_automation,shaneog/passenger_apt_automation,shaneog/passenger_apt_automation,LoveMondays/passenger_apt_automation,LoveMondays/passenger_apt_automation,LoveMondays/passenger_apt_automation,shaneog/passenger_apt_automation,LoveMondays/passenger_apt_automation,shaneog/passenger_apt_automation,shaneog/passenger_apt_automation,LoveMondays/passenger_apt_automation,LoveMondays/passenger_apt_automation,LoveMondays/passenger_apt_automation,phusion/passenger_apt_automation,shaneog/passenger_apt_automation,shaneog/passenger_apt_automation