Update hacking for Python3
The repo is Python 3 now, so update hacking to version 3.0 which
supports Python 3.
Update hacking extension for newer flake8. Remove vi header check, this
is enabled as H106 already.
Fix problems found.
Change-Id: Ie4ccf0a1075995f5624a838388b6b0b46343129a
diff --git a/test-requirements.txt b/test-requirements.txt
index a08c27a..63f290c 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,7 +1,7 @@
# 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>=1.1.0,<1.2.0 # Apache-2.0
+hacking>=3.0,<3.1.0 # Apache-2.0
fixtures>=3.0.0 # Apache-2.0/BSD
mock>=2.0.0 # BSD
coverage!=4.4,>=4.0 # Apache-2.0