* Add .gitreview
* Add .zuul.yaml with basic linters and pep8 jobs
* Fix up tox.ini to run linters and pep8 environments. This
changed some leagacy config in the default testenv that will
affect the more specific environments.
Change-Id: I02a81c5179141efb056cd030819af6387ba7a13c
Signed-off-by: Dean Troyer <dtroyer@gmail.com>