code: def _get_registries(self):
          
          if self.workflow.buildstep_result.get(PLUGIN_BUILD_ORCHESTRATE_KEY):
              registries = self.workflow.push_conf.pulp_registries
              if not registries:
                  registries = self.workflow.push_conf.all_registries
              return registries
          else:
              return self.workflow.push_conf.all_registries
docs: Return a list of registries that this build updated
  
          For orchestrator it should attempt to filter out non-pulp registries, on worker - return
          all registries