tests: add a regression test for raid10 deadlock

tests: add a regression test for raid10 deadlock

The deadlock is described in [1], it's fixed first by [2], however,
it turns out this commit will trigger other problems[3], hence this
commit will be reverted and the deadlock is supposed to be fixed by [1].

[1] https://lore.kernel.org/linux-raid/20230322064122.2384589-5-yukuai1@huaweicloud.com/
[2] https://lore.kernel.org/linux-raid/20220621031129.24778-1-guoqing.jiang@linux.dev/
[3] https://lore.kernel.org/linux-raid/20230322064122.2384589-2-yukuai1@huaweicloud.com/

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Jes Sorensen <jes@trained-monkey.org>