!3565 blk-throttle: enable hierarchical throttle in cgroup v1

Merge Pull Request from: @ci-robot 
 
PR sync from: Yu Kuai <yukuai3@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/MG5XE5J5HRK6WCO4L5ZFAIZS7FCTOGIM/ 
 
https://gitee.com/openeuler/kernel/issues/I8QYR1 
 
Link:https://gitee.com/openeuler/kernel/pulls/3565

 

Reviewed-by: Hou Tao <houtao1@huawei.com>
Reviewed-by: Liu Chao <liuchao173@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>