xfs/062: verify bulkstat finds all inodes

The bulkstat mechanism is used by xfsdump and other tools to index all
inodes allocated in a filesystem. Run some simple tests with varying
inode layouts and bulkstat batch sizes to verify bulkstat finds the
expected number of inodes.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

tests/xfs/062.out

@@ -0,0 +1,17 @@
+QA output created by 062
+expect 2057
+2057
+2057
+2057
+expect 1033
+1033
+1033
+1033
+expect 521
+521
+521
+521
+expect 9
+9
+9
+9