[WIP] Build a small automate model using factory girl

This PR builds a small automate model with the hierarchy
 DOMAIN
      NAMESPACES
          CLASS
              INSTANCES
              METHODS
e.g.
FactoryGirl.create(:miq_ae_domain, :with_small_model, :name => 'FRED')
will this work with `values {}` or `values({})` ?
I'd even like `Hash.new` better than `Hash[]`