code: def satellites_list(self, daemon_type=''):
          
          with self.app.conf_lock:
              res = {}
  
              for s_type in ['arbiter', 'scheduler', 'poller', 'reactionner', 'receiver', 'broker']:
                  if daemon_type and daemon_type != s_type:
                      continue
                  satellite_list = []
                  res[s_type] = satellite_list
                  for daemon_link in getattr(self.app.conf, s_type + 's', []):
                      satellite_list.append(daemon_link.name)
              return res
docs: Get the arbiter satellite names sorted by type
  
          Returns a list of the satellites as in:
          {
              reactionner: [
                  "reactionner-master"
              ],
              broker: [
                  "broker-master"
              ],
              arbiter: [
                  "arbiter-master"
              ],
              scheduler: [
                  "scheduler-master-3",
                  "scheduler-master",
                  "scheduler-master-2"
              ],
              receiver: [
                  "receiver-nsca",
                  "receiver-master"
              ],
              poller: [
                  "poller-master"
              ]
          }
  
          If a specific daemon type is requested, the list is reduced to this unique daemon type:
          {
              scheduler: [
                  "scheduler-master-3",
                  "scheduler-master",
                  "scheduler-master-2"
              ]
          }
  
          :param daemon_type: daemon type to filter
          :type daemon_type: str
          :return: dict with key *daemon_type* and value list of daemon name
          :rtype: dict