code: def vm_result_update(self, payload):
          
  
          port_id = payload.get('port_id')
          result = payload.get('result')
  
          if port_id and result:
              # Update the VM's result field.
              params = dict(columns=dict(result=result))
              self.update_vm_db(port_id, **params)
docs: Update the result field in VM database.
  
          This request comes from an agent that needs to update the result
          in VM database to success or failure to reflect the operation's result
          in the agent.