Run pep8 on tests.

I noticed that pep8 wasn't running on the tests.  This patch fixes that,
as well as a couple of pep8 errors in test_cfg.

Change-Id: I4429bfe6813a2e9394efb1753cbebbadb9f23833

tests/unit/test_cfg.py

@@ -94,7 +94,7 @@ class BaseTestCase(unittest.TestCase):
                 (fd, path) = tempfile.mkstemp(prefix=basename, suffix=ext)
             else:
                 path = basename + ext
-                fd = os.open(path, os.O_CREAT|os.O_WRONLY)
+                fd = os.open(path, os.O_CREAT | os.O_WRONLY)
             self.tempfiles.append(path)
             try:
                 os.write(fd, contents)
@@ -801,6 +801,7 @@ class TemplateSubstitutionTestCase(BaseTestCase):
         self.assertTrue(hasattr(self.conf.snafu, 'bell'))
         self.assertEquals(self.conf.snafu.bell, 'whistle-03')
 
+
 class ReparseTestCase(BaseTestCase):
 
     def test_reparse(self):

tox.ini

@@ -9,7 +9,7 @@ commands = nosetests
 
 [testenv:pep8]
 deps = pep8
-commands = pep8 --repeat --show-source openstack setup.py
+commands = pep8 --repeat --show-source openstack tests setup.py
 
 [testenv:pylint]
 deps = pylint