Update to 16.04 final release
Update to 16.04 final release

Not tested; simply data on http://releases.ubuntu.com/16.04/ were my
friend.

erikh/ubuntu,quarkslab/packer-ubuntu,dragon788/ubuntu,quarkslab/ubuntu,dragon788/ubuntu,quarkslab/ubuntu,NERC-CEH/ubuntu,samepage-labs/ubuntu,NERC-CEH/ubuntu,quarkslab/packer-ubuntu,erikh/ubuntu,kontrafiktion/ubuntu,boxcutter/ubuntu,kontrafiktion/ubuntu,samepage-labs/ubuntu,boxcutter/ubuntu