code: def get_satellites_list(self, sat_type):
          
          satellites_list = []
          if sat_type in ['arbiters', 'schedulers', 'reactionners',
                          'brokers', 'receivers', 'pollers']:
              for satellite in getattr(self, sat_type):
                  satellites_list.append(satellite)
              satellites_list = master_then_spare(satellites_list)
  
          return satellites_list
docs: Get a sorted satellite list: master then spare
  
          :param sat_type: type of the required satellites (arbiters, schedulers, ...)
          :type sat_type: str
          :return: sorted satellites list
          :rtype: list[alignak.objects.satellitelink.SatelliteLink]