code: def manage_stalking(self, check):
          
          need_stalk = False
          if check.status == u'waitconsume':
              if check.exit_status == 0 and 'o' in self.stalking_options:
                  need_stalk = True
              elif check.exit_status == 1 and 'd' in self.stalking_options:
                  need_stalk = True
              elif check.exit_status == 2 and 'd' in self.stalking_options:
                  need_stalk = True
              if check.output != self.output:
                  need_stalk = False
          if need_stalk:
              logger.info("Stalking %s: %s", self.get_name(), self.output)
docs: Check if the host need stalking or not (immediate recheck)
          If one stalking_options matches the exit_status ('o' <=> 0 ...) then stalk is needed
          Raise a log entry (info level) if stalk is needed
  
          :param check: finished check (check.status == 'waitconsume')
          :type check: alignak.check.Check
          :return: None