old_contents: from tendrl.commons import objects
  
  
  class Cluster(objects.BaseObject):
      def __init__(self, integration_id=None, public_network=None,
                   cluster_network=None, node_configuration=None,
                   conf_overrides=None, node_identifier=None, sync_status=None,
                   last_sync=None, is_managed=False, *args, **kwargs):
          super(Cluster, self).__init__(*args, **kwargs)
          self.integration_id = integration_id
          self.public_network = public_network
          self.cluster_network = cluster_network
          self.node_configuration = node_configuration
          self.conf_overrides = conf_overrides
          self.node_identifier = node_identifier
          self.sync_status = sync_status
          self.last_sync = last_sync
          self.is_managed = is_managed
          self.value = 'clusters/{0}'
  
      def render(self):
          self.value = self.value.format(
              self.integration_id or NS.tendrl_context.integration_id
          )
          return super(Cluster, self).render()
  
new_contents: from tendrl.commons import objects
  
  
  class Cluster(objects.BaseObject):
      def __init__(self, integration_id=None, public_network=None,
                   cluster_network=None, node_configuration=None,
                   conf_overrides=None, node_identifier=None, sync_status=None,
                   last_sync=None, is_managed="no", *args, **kwargs):
          super(Cluster, self).__init__(*args, **kwargs)
          self.integration_id = integration_id
          self.public_network = public_network
          self.cluster_network = cluster_network
          self.node_configuration = node_configuration
          self.conf_overrides = conf_overrides
          self.node_identifier = node_identifier
          self.sync_status = sync_status
          self.last_sync = last_sync
          self.is_managed = is_managed
          self.value = 'clusters/{0}'
  
      def render(self):
          self.value = self.value.format(
              self.integration_id or NS.tendrl_context.integration_id
          )
          return super(Cluster, self).render()
  
subject: Update __init__.py