common: add _require_scratch_shtudown

common: add _require_scratch_shtudown

This is to detect whether filesystem supports shutdown feature or not.
And let use this into the following xfs tests.

 xfs/053         (data exposure)
 xfs/137         (data vs filesize)
 xfs/138         (data vs filesize vs truncate)
 xfs/139         (data vs filesize vs partial truncate)
 xfs/140         (data vs filesize vs extending truncate)
 xfs/179         (data vs filesize w/ fsync)
 xfs/180         (data vs filesize w/ sync)
 xfs/182         (data vs filesize w/ recovery)
 xfs/200         (recovery vs ro-block device)
 xfs/306         (fsstress vs recovery)

 xfs/085
 xfs/086
 xfs/087

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>