btrfs-progs: test: 015-check-bad-memory-access

btrfs-progs: test: 015-check-bad-memory-access

Crafted images may trigger out-of-bounds access during check, fixed by
"btrfs-progs: Enhance read_tree_block to avoid memory corruption"

Now adding image for the first one, the other need enhancements in the
testing framework.

Reference: https://bugzilla.kernel.org/show_bug.cgi?id=97171
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=97191
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=97271
Signed-off-by: David Sterba <dsterba@suse.cz>