[tests] Port unittest_cwctl to py3k On python 2, sys.stdout takes bytes-like objects whereas python 3's takes unicode-like objects and handles the encoding on its own.

etc/init.d
etc/cubicweb.d
etc/bash_completion.d
usr/bin
usr/share/doc/cubicweb-ctl
var/log/cubicweb
var/lib/cubicweb/backup
var/lib/cubicweb/instances