It makes more sense to just look for usb devices that identify as a printer and use whatever we get. This saves us time having to explain to users how to add their particular printer to the whitelist to test.
bzr revid: fva@openerp.com-20140129163259-xdarcaw4qcqprvt6
bzr revid: fva@openerp.com-20131224151112-3svn5wm1wyf71wim