Updated openstack/openstack
Project: openstack/nova  4049a5387d840333ef9c711c78bee4c26f06c34e

Verify created_at cloudpipe timestamp is isotime

We format these timestamps using timeutils.isotime() in the cloudpipe
API extension, so we should check that in the API sample tests rather
than using the generic timestamp regexp.

Full context here:

  http://lists.openstack.org/pipermail/openstack-dev/2014-April/033971.html

Change-Id: I52543f68a512da4064a905e2efa453425ce36dae