Fix H404/405 violations for unit tests

There is a lot of H404/405 violations in Tempest now, and that leads
difficult to migrate the code to tempest-lib or the other projects'
repos. This patch fixes these violations for unit tests.

Change-Id: Ib2418300b2679bee477c84cd0943382d031ff4a9
diff --git a/tempest/tests/base.py b/tempest/tests/base.py
index 27eb2c4..fe9268e 100644
--- a/tempest/tests/base.py
+++ b/tempest/tests/base.py
@@ -26,8 +26,7 @@
         self.stubs = mox_fixture.stubs
 
     def patch(self, target, **kwargs):
-        """
-        Returns a started `mock.patch` object for the supplied target.
+        """Returns a started `mock.patch` object for the supplied target.
 
         The caller may then call the returned patcher to create a mock object.
 
diff --git a/tempest/tests/fake_http.py b/tempest/tests/fake_http.py
index 7d77484..d714055 100644
--- a/tempest/tests/fake_http.py
+++ b/tempest/tests/fake_http.py
@@ -50,7 +50,8 @@
 class fake_httplib(object):
     def __init__(self, headers, body=None,
                  version=1.0, status=200, reason="Ok"):
-        """
+        """Initialization of fake httplib
+
         :param headers: dict representing HTTP response headers
         :param body: file-like object
         :param version: HTTP Version
diff --git a/tempest/tests/stress/test_stress.py b/tempest/tests/stress/test_stress.py
index 16f1ac7..0ec2a5d 100644
--- a/tempest/tests/stress/test_stress.py
+++ b/tempest/tests/stress/test_stress.py
@@ -25,8 +25,7 @@
 
 
 class StressFrameworkTest(base.TestCase):
-    """Basic test for the stress test framework.
-    """
+    """Basic test for the stress test framework."""
 
     def _cmd(self, cmd, param):
         """Executes specified command."""
diff --git a/tempest/tests/test_hacking.py b/tempest/tests/test_hacking.py
index 62d2aee..55f00ef 100644
--- a/tempest/tests/test_hacking.py
+++ b/tempest/tests/test_hacking.py
@@ -17,7 +17,8 @@
 
 
 class HackingTestCase(base.TestCase):
-    """
+    """Test class for hacking rule
+
     This class tests the hacking checks in tempest.hacking.checks by passing
     strings to the check methods like the pep8/flake8 parser would. The parser
     loops over each line in the file and then passes the parameters to the