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: I4331cd8ed44712eba2f1edd76ff6bdb7dd874c44

oslo/rootwrap/filters.py

@@ -320,6 +320,7 @@ class IpNetnsExecFilter(ChainingFilter):
 
 class ChainingRegExpFilter(ChainingFilter):
     """Command filter doing regexp matching for prefix commands.
+
     Remaining arguments are filtered again. This means that the command
     specified as the arguments must be also allowed to execute directly.
     """

test-requirements.txt

@@ -1,4 +1,4 @@
-hacking>=0.8.0,<0.9
+hacking>=0.9.2,<0.10
 
 discover
 fixtures>=0.3.14

tox.ini

@@ -23,6 +23,7 @@ commands =
 commands = {posargs}
 
 [flake8]
+ignore = H305 
 show-source = True
 exclude = .tox,dist,doc,*.egg,build
 builtins = _