Merge "Fix hacking min version to 3.0.1"

test-requirements.txt

 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
-hacking>=3.0,<3.1.0 # Apache-2.0
+hacking>=3.0.1,<3.1.0 # Apache-2.0
 netaddr>=0.7.18 # BSD
 stestr>=2.0.0 # Apache-2.0