code: def auth_tls(self, mount_point='cert', use_token=True):
          
          return self.login('/v1/auth/{0}/login'.format(mount_point), use_token=use_token)
docs: POST /auth/<mount point>/login
  
          :param mount_point:
          :type mount_point:
          :param use_token:
          :type use_token:
          :return:
          :rtype: