Add blank db HOST option in sample local settings file.
Add blank db HOST option in sample local settings file.

mozilla/moztrap,mozilla/moztrap,shinglyu/moztrap,bobsilverberg/moztrap,mozilla/moztrap,mccarrmb/moztrap,mozilla/moztrap,mozilla/moztrap,bobsilverberg/moztrap,shinglyu/moztrap,shinglyu/moztrap,shinglyu/moztrap,mccarrmb/moztrap,shinglyu/moztrap,bobsilverberg/moztrap,bobsilverberg/moztrap,mccarrmb/moztrap,mccarrmb/moztrap,mccarrmb/moztrap