qapi: Add corrupt field to ImageInfoSpecificQCow2

qapi: Add corrupt field to ImageInfoSpecificQCow2

Just like lazy-refcounts, this field will be present iff the qcow2
compat level is 1.1 (or probably any future revision).

As expected, this breaks some tests due to the new field present in
qemu-img info output; so fix their output accordingly.

Suggested-by: Eric Blake <[email protected]>
Signed-off-by: Max Reitz <[email protected]>
Reviewed-by: Eric Blake <[email protected]>
Message-id: 1412105489[email protected]
Signed-off-by: Stefan Hajnoczi <[email protected]>