Music app AP tests need to step up to new Mediascanner 2 schema version

Mediascanner 2.0 will release version "0.105+14.10.20140903-0ubuntu1" of the mediascanner, from version "0.104+14.10.20140825-0ubuntu1". As of writing this, the package is only available via the silo 14 PPA [1] and has not yet been included on an image for a device [2]. Thus, soon the tests will fail in Jenkins and will fail in the CI Dashboard once the package is in the image. The tests use a mocked up mediascanner 2.0 database that will need to be updated. This needs to be fixed so landings can proceed and so that tests in the CI Dashboard will stay green when an image is released with the new version.

[1] https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/landing-014/+packages
[2] http://cdimage.ubuntu.com/ubuntu-touch/daily-preinstalled/20140904/utopic-preinstalled-touch-armhf.manifest