Fix coupel of newer tests to work with external log/rt devices too.

Merge of master-melb:xfs-cmds:26371a by kenmcd.

096

@@ -66,6 +66,7 @@ _mkfs_filter()
 	-e 's/, lazy-count.*//' \
 	-e '/inode-paths/d' \
 	-e 's/\(log[ 	]*=\).*bsize/\1LOG                    bsize/' \
+	-e 's/\(realtime[ 	]*=\).*extsz/\1REALTIME               extsz/' \
 	-e 's/ *$//' \
    | grep -v parent
 }