xfs: add a test that zoned file systems with rump RTG can't be mounted

xfs: add a test that zoned file systems with rump RTG can't be mounted

Garbage collection assumes all zones contain the full amount of blocks.
Mkfs already ensures this happens, but the kernel mount code did not
verify this.  Instead such a file system would eventually fail scrub.

Add a test to verify the new superblock verifier check.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Zorro Lang <zlang@kernel.org>