Kill few pep8 errors

Signed-off-by: Steven Dake <sdake@redhat.com>

heat/engine/manager.py

@@ -221,7 +221,6 @@ class EngineManager(manager.Manager):
                 'ResourceProperties': event.resource_properties,
                 'ResourceStatus': event.name}
 
-
     def list_events(self, context, stack_name):
         """
         The list_events method lists all events associated with a given stack.

heat/tests/test_validate.py

@@ -186,6 +186,8 @@ test_template_findinmap_invalid = '''
   }
 }
 '''
+
+
 @attr(tag=['unit', 'validate'])
 @attr(speed='fast')
 class validateTest(unittest.TestCase):