Updated openstack/openstack
Project: openstack/nova  da4334f2d2d1efbf0a0dc1e0b203e4a8ced4e153

Avoid possible timing attack in metadata api

Introduce a constant time comparison function to
nova utils for comparing authentication tokens.

Change-Id: I7374f2edc6f03c7da59cf73ae91a87147e53d0de
Closes-bug: #1325128