docs: def queue_instances(instances):
      '''
      Queue a set of instances to be provisioned later. Expects a list.
  
      Currently this only queries node data, and then places it in the cloud
      cache (if configured). If the salt-cloud-reactor is being used, these
      instances will be automatically provisioned using that.
  
      For more information about the salt-cloud-reactor, see:
  
      https://github.com/saltstack-formulas/salt-cloud-reactor
      '''
      for instance_id in instances:
          node = _get_node(instance_id=instance_id)
          __utils__['cloud.cache_node'](node, __active_provider_name__, __opts__)