Add discovered appliances to Orchestrator

This API is to add the discovered appliance to Orchestrator. To find the ID of the orchestrator groups, see the documentation for the 'group' api. To find the ID of a particular discovered appliance, use the /appliance/discovered api.
To have the appliance licensed/approved. You should use the /license/portal/appliance/grant API (after using this api to add the discovered appliance)