Update the deployment design page

* Real free node count.
* Role list taken from API, not hardcoded.
* Dialog for associating roles with hardware profiles.

TODO:
* Get hardware profiles list.
* Actually update the role.flavor_id.
* Update the free node count with JavaScript.

Change-Id: Ieeb100f25ec40ab8bc260ea542f098019d5cd04b
Implements: blueprint tripleo-ui-deployment-design
Merge "Update the deployment design page"