Unify test docstrings.

letsencrypt/tests/acme_util.py

@@ -1,4 +1,4 @@
-"""Class helps construct valid ACME messages for testing."""
+"""ACME utilities for testing."""
 import datetime
 import itertools
 import os

letsencrypt/tests/continuity_auth_test.py

@@ -1,4 +1,4 @@
-"""Test the ContinuityAuthenticator dispatcher."""
+"""Test for letsencrypt.continuity_auth."""
 import unittest
 
 import mock

letsencrypt/tests/notify_test.py

@@ -1,4 +1,4 @@
-"""Tests for letsencrypt/notify.py"""
+"""Tests for letsencrypt.notify."""
 
 import mock
 import socket

letsencrypt/tests/proof_of_possession_test.py

@@ -1,4 +1,4 @@
-"""Tests for proof_of_possession.py"""
+"""Tests for letsencrypt.proof_of_possession."""
 import Crypto.PublicKey.RSA
 import os
 import pkg_resources