In Change I523a4a85867f82d234ba1f3e6fad8b8cd2291182, the pep8 test was
accidentally dropped.

Fix up code so that pep8 passes.

In addition to that following change has been added here to unbreak CI:

Add WebTest as an indirect test dependency

Pecan has made webtest an optional dependency for testing only [1].
Since it is still used for testing we need to add it to our
test-requirements.txt.

[1]: https://github.com/pecan/pecan/pull/140

Change-Id: I2f85adb4ef29a43389897c201e6152fd4c7be9d6