Upgrade to latest hacking - v6

Required minor changes to existing files to comply with new flake rules.

Change-Id: Ia0bff27ab4a7ec98c533ea66357a3c0529026102

ironic/drivers/base.py

@@ -1662,7 +1662,7 @@ class NetworkInterface(BaseInterface):
         """
 
     def need_power_on(self, task):
-        """Check if ironic node must be powered on before applying network changes
+        """Check if node must be powered on before applying network changes
 
         :param task: A TaskManager instance.
         :returns: Boolean.

ironic/drivers/modules/drac/raid.py

@@ -1022,7 +1022,7 @@ def _commit_to_controllers(node, controllers, substep="completed"):
     # all realtime controllers
     all_realtime = all(
         (cntlr['is_reboot_required'] == optional)
-        and not(cntlr.get('is_ehba_mode'))
+        and not (cntlr.get('is_ehba_mode'))
         for cntlr in controllers)
 
     # check any controller with ehba mode

ironic/hacking/checks.py

@@ -51,4 +51,4 @@ def check_explicit_underscore_import(logical_line, filename):
         UNDERSCORE_IMPORT_FILES.append(filename)
     elif (translated_log.match(logical_line)
           or string_translation.match(logical_line)):
-        yield(0, "N323: Found use of _() without explicit import of _!")
+        yield (0, "N323: Found use of _() without explicit import of _!")

tox.ini

@@ -37,7 +37,7 @@ commands = {toxinidir}/tools/states_to_dot.py -f {toxinidir}/doc/source/images/s
 [testenv:pep8]
 usedevelop = False
 deps=
-    hacking>=4.1.0,<5.0.0 # Apache-2.0
+    hacking~=6.0.0 # Apache-2.0
     doc8>=0.6.0 # Apache-2.0
     pycodestyle>=2.0.0,<3.0.0 # MIT
     flake8-import-order>=0.17.1 # LGPLv3