Add order override for root select objects

[mpiecuch-nuage]

Add order override field to root level select actions. The trees are reordered by increasing order field value. Any action without order defined defaults to 0. This allows some actions to be forced to the end of template processing when store/retrieve dependencies are insufficient.

  - select-object:
      type: Gateway
      by-field: name
      value: {{ gateway_name }}
      disable-combine: true
      order: 10