Add option to disable log file
Add option to disable log file

On ubuntu 16.04 (probably other systemd distributions too), I've
noticed that monit logs are doubled. Disabling log file and leaving
logging to systemd helps.

StuporHero/monit-ng,vkhatri/monit-ng,bbg-cookbooks/monit-ng,StuporHero/monit-ng,vkhatri/monit-ng,bbg-cookbooks/monit-ng,StuporHero/monit-ng,bbg-cookbooks/monit-ng,vkhatri/monit-ng