The original os_ironic_node module, nor bifrost as a whole
lacks a concept of waiting for a node deployment to reach an
active state where the conductor no longer has to take any
additional action upon the node.
In order to allow users to utilize the Ansible serial option,
we need to support the ability to wait so the conductor is not
overloaded by the user in specific edge cases.
Change-Id: I1fe3353a56a54ecde25f9f237b85ca009813f541
Depends-On: I69eee2d254cde2fffcf0c1ac7679a623fa7f97a5
697bb2d2b3