Enable H302 hacking check

This change requires hacking >0.5.5

Change-Id: Ic36fa0502548335d433f3fbe663854523dd04397

openstack/common/lockutils.py

@@ -28,7 +28,7 @@ from eventlet import semaphore
 from oslo.config import cfg
 
 from openstack.common import fileutils
-from openstack.common.gettextutils import _
+from openstack.common.gettextutils import _  # noqa
 from openstack.common import local
 from openstack.common import log as logging
 

openstack/common/processutils.py

@@ -27,7 +27,7 @@ import signal
 from eventlet.green import subprocess
 from eventlet import greenthread
 
-from openstack.common.gettextutils import _
+from openstack.common.gettextutils import _  # noqa
 from openstack.common import log as logging
 
 

tests/unit/test_processutils.py

@@ -21,7 +21,7 @@ import fixtures
 import os
 import tempfile
 
-from six import StringIO
+import six
 
 from openstack.common import processutils
 from tests import utils
@@ -214,7 +214,7 @@ class FakeSshChannel(object):
         return self.rc
 
 
-class FakeSshStream(StringIO):
+class FakeSshStream(six.StringIO):
     def setup_channel(self, rc):
         self.channel = FakeSshChannel(rc)
 
@@ -226,9 +226,9 @@ class FakeSshConnection(object):
     def exec_command(self, cmd):
         stdout = FakeSshStream('stdout')
         stdout.setup_channel(self.rc)
-        return (StringIO(),
+        return (six.StringIO(),
                 stdout,
-                StringIO('stderr'))
+                six.StringIO('stderr'))
 
 
 class SshExecuteTestCase(utils.BaseTestCase):