xfs: force file creation to the data device for certain layout tests

xfs: force file creation to the data device for certain layout tests

I found a bunch more tests in the xfs/ directory that try to create
specific metadata layouts on the data device, either because they're
fuzz tests or because they're testing specific edge cases of the code
base.  Either way, these test need to override '-d rtinherit' in the
MKFS_OPTIONS, so do that with _xfs_force_bdev.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>