Update hacking for Python3
The repo is Python 3 now, so update hacking to version 3.0 which
supports Python 3.
Fix problems found.
Change-Id: Ia59a23a36ebb8548a20e894000f7342c73012eac
diff --git a/test-requirements.txt b/test-requirements.txt
index b99db27..bf16924 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,11 +2,7 @@
# of appearance. Changing the order has an impact on the overall integration
# process, which may cause wedges in the gate later.
-hacking<0.13,>=0.12.0 # Apache-2.0
-# remove this pyflakes from here once you bump the
-# hacking to 3.2.0 or above. hacking 3.2.0 takes
-# care of pyflakes version compatibilty.
-pyflakes>=2.1.1
+hacking>=3.2.0,<3.3.0 # Apache-2.0
python-subunit>=1.0.0 # Apache-2.0/BSD
oslotest>=3.2.0 # Apache-2.0