Correct failures for check W292

The new W292 "no newline at end of file" rule was failing and
ignored. Now it's enforced.

Change-Id: I71ba57a056b5b0c772482f5bd80f3e05dffa54d2

keystoneclient/tests/v2_0/test_certificates.py

@@ -37,4 +37,4 @@ class CertificateTests(utils.TestCase, testresources.ResourcedTestCase):
 
 
 def load_tests(loader, tests, pattern):
-    return testresources.OptimisingTestSuite(tests)
+    return testresources.OptimisingTestSuite(tests)

keystoneclient/v2_0/certificates.py

@@ -39,4 +39,4 @@ class CertificatesManager(object):
 
         resp, body = self._client.get('/certificates/signing',
                                       authenticated=False)
-        return resp.text
+        return resp.text

tox.ini

@@ -35,8 +35,8 @@ commands = oslo_debug_helper -t keystoneclient/tests {posargs}
 # H304: no relative imports
 # H405: multi line docstring summary not separated with an empty line
 # E122: continuation line missing indentation or outdented
-# New from hacking 0.10: H238,W292
-ignore = F821,H238,H304,H405,E122,W292
+# New from hacking 0.10: H238
+ignore = F821,H238,H304,H405,E122
 show-source = True
 exclude = .venv,.tox,dist,doc,*egg,build,*openstack/common*