Somewhere along the way, WSME and flask/werkzeug have got out of sync
and tests have started failing. Since there aren't regular contributions
to WSME we don't catch these changes, so this may have happened months
or years ago.
I have adjusted tests to attempt to account for what I can, but one test
fails to work so I have marked it as an xfail. It works correctly with
werkzeug 1.13.x but not later. Since WSME is in something worse than
maintenance mode, I'm not inclined to fix this.
pep8/flake8 in python3 is more strict than python. The gate now
runs the pep8 jobs using python3 by default, so the local jobs
should as well. This changes the job and also fixes the new problems it
points out.
There are other failures, but they are present in master as well, so
leaving that for other changes.
Change-Id: I57ae0405e0d6ddba0bb1dac93020fb08a0fc7c89
