flake8: Enable some off-by-default checks

Enable the following off-by-default checks:
    * [H204] Use assert(Not)Equal to check for equality.
    * [H205] Use assert(Greater|Less)(Equal) for comparison.
    * [H210] Require ‘autospec’, ‘spec’, or ‘spec_set’ in
             mock.patch/mock.patch.object calls

Increase the version of hacking in test-requirements so that can use new
off-by-default checks.

No changes to code were required.

Change-Id: I98aa484dc5414ee49c281dfd40e44b3c613d53e0

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<0.13,>=0.12.0 # Apache-2.0
+hacking>=1.0.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 mock>=2.0.0 # BSD
 testtools>=1.4.0 # MIT

tox.ini

@@ -69,8 +69,11 @@ import-order-style = pep8
 application-import-names = ironic_python_agent
 # [H106] Don't put vim configuration in source files.
 # [H203] Use assertIs(Not)None to check for None.
+# [H204] Use assert(Not)Equal to check for equality.
+# [H205] Use assert(Greater|Less)(Equal) for comparison.
+# [H210] Require ‘autospec’, ‘spec’, or ‘spec_set’ in mock.patch/mock.patch.object calls
 # [H904] Delay string interpolations at logging calls.
-enable-extensions=H106,H203,H904
+enable-extensions=H106,H203,H204,H205,H210,H904
 
 [hacking]
 import_exceptions = ironic.openstack.common.gettextutils._,testtools.matchers