docs: def ext_pillar(minion_id, pillar, conf):
      '''
      Return an existing set of certificates
      '''
      cache = salt.cache.Cache(__opts__, syspaths.CACHE_DIR)
  
      ret = {}
      dns_names = cache.fetch('venafi/minions', minion_id)
      for dns_name in dns_names:
          data = cache.fetch('venafi/domains', dns_name)
          ret[dns_name] = data
          del ret[dns_name]['csr']
      return {'venafi': ret}