bunch of docstring changes

nova/test.py

@@ -55,13 +55,13 @@ LOG = log.getLogger('nova.tests')
 
 
 class skip_test(object):
-    """decorator that skips a test"""
+    """Decorator that skips a test."""
     def __init__(self, msg):
         self.message = msg
 
     def __call__(self, func):
         def _skipper(*args, **kw):
-            """wrapped skipper function."""
+            """Wrapped skipper function."""
             raise nose.SkipTest(self.message)
         _skipper.__name__ = func.__name__
         _skipper.__doc__ = func.__doc__