xfs: online grow vs. log recovery stress test (realtime version)

xfs: online grow vs. log recovery stress test (realtime version)

This is fundamentally the same as the previous growfs vs. log
recovery test, with tweaks to support growing the XFS realtime
volume on such configurations. Changes include using the appropriate
mkfs params, growfs params, and enabling realtime inheritance on the
scratch fs.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Zorro Lang <zlang@redaht.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>