Bump hacking to 0.9.x series

In order to keep this patch to just a requirements bump, ignore new and
stricter hacking rules that are being triggered. Fixing up the code and
turning these on is out of scope of this patch and is for future
patches.

Change-Id: Ia3517e705f894b48585b957c21e7a3a6ed90e586

test-requirements.txt

@@ -1,4 +1,4 @@
-hacking>=0.8.0,<0.9
+hacking>=0.9.2,<0.10
 
 coverage>=3.6
 discover

tox.ini

@@ -25,6 +25,8 @@ commands = python setup.py testr --coverage --testr-args='{posargs}'
 downloadcache = ~/cache/pip
 
 [flake8]
-ignore = E12,F841,F811,F821,H302,H404
+# TODO fix following rules from hacking 0.9
+# E131,E265,H233,H305,H307,H402,H405,H904
+ignore = E12,E131,E265,F841,F811,F821,H233,H302,H305,H307,H402,H404,H405,H904
 show-source = True
 exclude=.venv,.git,.tox,dist,*openstack/common*,*lib/python*,*egg,build