APB state support (#809)
APB state support (#809)

* first pass at apb state support
* update proposal based on feedback

eriknelson/ansible-service-broker,rthallisey/ansible-service-broker,johnkim76/ansible-service-broker,johnkim76/ansible-service-broker,johnkim76/ansible-service-broker,rthallisey/ansible-service-broker,eriknelson/ansible-service-broker,rthallisey/ansible-service-broker,eriknelson/ansible-service-broker