t/zbd: set badblocks related parameters in run-tests-against-nullb

t/zbd: set badblocks related parameters in run-tests-against-nullb

As a preparation to add test cases which check that the
continue_on_error option and the recover_zbd_write_error option work
when bad blocks cause IO errors, set additional null_blk parameters
badblocks_once and badblocks_partial_io. These parameters were added to
Linux kernel version 6.15-rc1 and allows more realistic scenario of
write failures on zoned block devices. The former parameter makes the
specified badblocks recover after the first write, and the latter
parameter leaves partially written data on the device.

Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Link: https://lore.kernel.org/r/20250425052148.126788-7-shinichiro.kawasaki@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>