ext4: run mballoc test with different layouts setting

Use KUNIT_CASE_PARAM to run mballoc test with different layouts setting.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20230928160407.142069-13-shikemeng@huaweicloud.com


Signed-off-by: Theodore Ts'o <tytso@mit.edu>