In settings a yaml file can be selected to specify the Service Model and the parameters for instantiation:
SERVICE_YAML_TEMPLATE = "templates/vnf-services/ubuntu16test-service.yaml"
Using YAML templates for Service instantiation the function will be used:

    service_inst = YamlTemplateServiceAlaCarteInstantiateStep()
    service_inst.execute()
 
But a couple of failures appear using this feature.

• missing HEAT files for VSP creation
• Wrong "name" values in onboard scripts
• Missing execution step in Customer Creation