Enable E113,E111,H302,F812,E713 rules

After bumping the hacking version to the 0.9.x series ignores were
added for several rules. This commit fixes the violations for a subset
of these rules and re-enables the checks.

Change-Id: I8cc92a5de5acf43a2143751851cf6fddab401ba4
diff --git a/tox.ini b/tox.ini
index 2603bd2..2db8c1b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -99,7 +99,7 @@
 
 [flake8]
 # E125 is a won't fix until https://github.com/jcrocholl/pep8/issues/126 is resolved.  For further detail see https://review.openstack.org/#/c/36788/
-# Skipped because of new hacking 0.9: H407,H405,H904,H305,E123,H307,E122,E129,E128,H402,E251,E113,E111,H302,F812,E713
-ignore = E125,H404,H407,H405,H904,H305,E123,H307,E122,E129,E128,H402,E251,E265,E113,E111,H302,F812,E713
+# Skipped because of new hacking 0.9: H407,H405,H904,H305,E123,H307,E122,E129,E128,H402,E251,E265
+ignore = E125,H404,H407,H405,H904,H305,E123,H307,E122,E129,E128,H402,E251,E265
 show-source = True
 exclude = .git,.venv,.tox,dist,doc,openstack,*egg