Move to hacking 0.10

Release notes:
http://git.openstack.org/cgit/openstack-dev/hacking/tag/?id=0.10.0

Per the release notes, H803 has been removed.

Change-Id: Ifaf62839a4b6da62a3b380396158b463c1381026

test-requirements.txt

@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking>=0.9.2,<0.10
+hacking>=0.10.0,<0.11
 bashate>=0.2 # Apache-2.0
 
 # Optional backend: SQL

tox.ini

@@ -96,8 +96,8 @@ filename= *.py,keystone-all,keystone-manage
 show-source = true
 
 # H405  multi line docstring summary not separated with an empty line
-# H803  Commit message should not end with a period (do not remove per list discussion)
-ignore = H405,H803
+# New from hacking 0.10: H238
+ignore = H238,H405
 
 exclude=.venv,.git,.tox,build,dist,doc,*openstack/common*,*lib/python*,*egg,tools,vendor,.update-venv,*.ini,*.po,*.pot
 max-complexity=24