Python3 handles encoding differently, and files are loaded
according to the locale set on the system.
This means that when building on a locale-less chroot,
the tests will always fail because it will try to load utf-8
and encode it as ASCII.
This forces the encoding. The tests are encoded in utf-8 anyway
so any other encoding set by the locale would cause a failure.
Salvo 'LtWorf' Tomaselli