Update oslo.config.generator

pick 01e5c8e Change file bit of sample config file generator
pick a6ddb0a config.generator: remove the total number of options

Change-Id: I18ae09b54a4e0c7f972479b464f681adca47493e
Start using hacking 0.6

So we can start using new hacking 0.6 checks.

Since hacking 0.6 pins pep8, pyflakes and flake8 they can be removed
from test-requires. For any unfixed checks list them in tox.ini

Fix a H103, 'Header does not match Apache 2.0 License notice' that
leaked in

Change-Id: I652fe3270f1c37afdd386bfae7c4b27b6abcfa06
Merge "Start using hacking 0.6"
Merge "Update oslo.config.generator"
Merge remote-tracking branch 'm_src_repo/citrix-fixes' into build-temp