docs: def get_smt_userid():
      """Get the userid of smt server"""
      cmd = ["sudo", "/sbin/vmcp", "query userid"]
      try:
          userid = subprocess.check_output(cmd,
                                           close_fds=True,
                                           stderr=subprocess.STDOUT)
          userid = bytes.decode(userid)
          userid = userid.split()[0]
          return userid
      except Exception as err:
          msg = ("Could not find the userid of the smt server: %s") % err
          raise exception.SDKInternalError(msg=msg)