Server/Tests: Use deepcopy to clone config

Fixes wrong references in embedded (dict in dict) class variables
outside the class variable definition context, for redefined
inherited class variables.

warden_server/test_warden_server.py

@@ -7,6 +7,7 @@ import getpass
 import sys
 import warnings
 from os import path
+from copy import deepcopy
 import unittest2 as unittest
 import MySQLdb as my
 from warden_server import build_server
@@ -240,14 +241,14 @@ class Warden3ServerTest(unittest.TestCase):
 
 class X509AuthenticatorTest(Warden3ServerTest):
     """Performs the basic test suite using the X509Authenticator"""
-    config = dict(Warden3ServerTest.config)
+    config = deepcopy(Warden3ServerTest.config)
     config['auth']['type'] = 'X509Authenticator'
     app = build_server(config)
 
 
 class X509NameAuthenticatorTest(Warden3ServerTest):
     """Performs the basic test suite using the X509NameAuthenticator"""
-    config = dict(Warden3ServerTest.config)
+    config = deepcopy(Warden3ServerTest.config)
     config['auth']['type'] = 'X509NameAuthenticator'
     app = build_server(config)