support/misc/Vagrantfile: bump to ubuntu 16.04

* Updating to ubuntu 16.04
* Fixing dependencies
* Fixing locale complaints
* Removing unused packages

Signed-off-by: Angelo Compagnucci <angelo.compagnucci@gmail.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>