add upgrade note for exception message change in  libcloud/common/openstack_identity.py:691
@@ -5,6 +5,16 @@ This page describes how to upgrade from a previous version to a new version
which contains backward incompatible or semi-incompatible changes and how to
preserve the old behavior when this is possible.
+Libcloud 3.3.2
+--------------
+
+* Exception message changed in OpenStack drivers
+
+ Attempting to use an identity API that requires authentication without an
+ authentication token raises a ValueError. The exception message used to be
+ "Not to be authenticated to perform this request", but has now been changed
+ to "Need to be authenticated to perform this request".
+
Libcloud 3.3.0
--------------
