This commit patches a few acceptance tests in order to get them to
pass under OpenStack Mitaka.
The devstack dev environment script has also been updated to reflect
OpenStack Mitaka as well as the new Terraform dependency vendoring.
This commit makes a few attributes computed so the generated information
is accessible after creation.
It also fixes the "persistence" attribute, which previously had a typo.
Finally, it converts "admin_state_up" to a Boolean to match the majority
of other attributes of the same name.
Joe Topjian