def add_machine(vm, options = {})
      sys_desc = vm.interface.export(interface, path)
      options.each do |key, value|
        sys_desc.add_description(key, value, value)
      end
    end
def add_machine(vm, options = {})
      sys_desc = vm.interface.export(interface, path)
      options.each do |key, value|
        sys_desc.add_description(key, value, value)
      end
    end
Adds a VM to the appliance