* load_template_source(): use io.open() with an encoding instead of
open(), to have the same behaviour on Python 2 and Python 3
* assertRedirectsNoFollow(): remove an useless assertion on the
response status code which is already tested a few lines below. The
assertion used code/100 which returns a float on Python 3, whereas
an int was expected.
* add_logout_reason(): don't encode reason to UTF-8 on Python 3
* tox.ini: add openstack_dashboard.dashboards.settings.password to
Python 3.4
Partial-Implements: blueprint porting-python3
Change-Id: Iff8997917b5d812952150b2abe89ddd12deab0c0
c63d7a6390