Fix pep8 issues

The pep8 jobs aren't running in gate at the moment.
Fix up the pep8 issues and remove the tox filter that stopped it
from running.

Also ignore E129 (visually indented line with same indent as next
logical line) as we don't follow it.

Change-Id: I394708ba96797bbc6fcd951e6436a104be0a3746
15 files changed