Import a (missed) class.

trishankkarthik · trishankkarthik · commit 1cd22baab5d5 · 2013-03-04T13:05:34.000-05:00
diff --git a/tuf/interposition/__init__.py b/tuf/interposition/__init__.py
@@ -4,7 +4,7 @@
 import urllib
 import urllib2
 
-from configuration import Configuration
+from configuration import Configuration, InvalidConfiguration
 from utility import Logger
 from updater import Updater
 
