Deployment design form

It uses some templates that are not yet accepted in Horizon,
namely https://review.openstack.org/#/c/67140/1 -- until they
are merged, we have them included in Tuskar-ui.

Implements: blueprint tripleo-ui-deployment-design

Change-Id: I230a682386b577aee3d3972040007831294f5991
Merge "Deployment design form"