Updated openstack/openstack
Project: openstack/keystone  dd99c440af2fc81faa92a1e312048501a8125be7

Move notification unit tests to unit test dir

The test_notification.py module holds unit tests for the notification
module and should live in the common unit test directory.

Change-Id: I9eb9885a2e3d3a743920818a733f299bf012bb5d