Bug 1032675 - [System] upgrade the new default tones for OTA

WIP
Just a heads-up, Dominic: I changed the way we define IDs for built-in ringtones in my SD card work: https://github.com/mozilla-b2g/gaia/pull/22597/files#diff-cab4f5c002f4f9eb78fcbae2d010a46eR101

Basically, you'll want `'builtin:' + type + '/' + info.name` here. If this lands before my patch lands, then don't worry about it. I'll do it. Otherwise, you'll need to update this.