Use pep8 instead of linters
Use pep8 instead of linters

According to the PTI (=Python Test Interface,
http://governance.openstack.org/reference/cti/python_cti.html), pep8
is the interface for codestyle checks. Move all tests from linters to
pep8.

Change-Id: I9b53b091f69290e3bda43ee1d50122c39b054e1b

vauxoo-tests/vauxoodocstheme,openstack/openstackdocstheme,openstack/openstackdocstheme,openstack/openstackdocstheme,vauxoo-tests/vauxoodocstheme,vauxoo-tests/vauxoodocstheme,openstack/openstackdocstheme