Update hacking for Python3

The repo is Python 3 now, so update hacking to version 3.0 which
supports Python 3.

Fix problems found:
E117 over-indented

Blacklist:
E402 module level import not at top of file
W504 line break after binary operator

Change-Id: I05b04a6f15683f7f37a5be49cc50c02eb3bbf7a7

cyborgclient/common/http.py

@@ -326,7 +326,7 @@ class SessionClient(adapter.LegacyJsonAdapter):
             raise exc.EndpointException(message=message)
         if (self.endpoint_override is not None and
                 location.lower().startswith(self.endpoint_override.lower())):
-                return location[len(self.endpoint_override):]
+            return location[len(self.endpoint_override):]
         else:
             return location
 

cyborgclient/common/utils.py

@@ -14,12 +14,12 @@
 #
 import logging
 
+from oslo_serialization import jsonutils
+
 from cyborgclient import exceptions as exc
 
 LOG = logging.getLogger(__name__)
 
-from oslo_serialization import jsonutils
-
 
 def common_filters(marker=None, limit=None, sort_key=None, sort_dir=None):
     """Generate common filters for any list request.

test-requirements.txt

@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking>=0.12.0,<0.13 # Apache-2.0
+hacking>=3.0,<3.1.0 # Apache-2.0
 
 coverage>=4.0,!=4.4 # Apache-2.0
 python-subunit>=0.0.18 # Apache-2.0/BSD

tox.ini

@@ -61,8 +61,9 @@ commands =
 
 [flake8]
 # E123, E125 skipped as they are invalid PEP-8.
-
+# W504 line break after binary operator
+# E402 module level import not at top of file
 show-source = True
-ignore = E123,E125
+ignore = E123,E125,W504,E402
 builtins = _
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build