iotests: Add copyright line in qcow2.py

The file qcow2.py was originally contributed in 2012 by Kevin Wolf,
but was not given traditional boilerplate headers at the time.  The
missing license was just rectified (commit 16306a7) using the
project-default GPLv2+, but as Vladimir is not at Red Hat, he did not
add a Copyright line.  All earlier contributions have come from CC'd
authors, where all but Stefan used a Red Hat address at the time of
the contribution, and that copyright carries over to the split to
qcow2_format.py (d5262c7).

CC: Kevin Wolf <[email protected]>
CC: Stefan Hajnoczi <[email protected]>
CC: Eduardo Habkost <[email protected]>
CC: Max Reitz <[email protected]>
CC: Philippe Mathieu-Daudé <[email protected]>
CC: Paolo Bonzini <[email protected]>
Signed-off-by: Eric Blake <[email protected]>
Message-Id: <[email protected]>
Acked-by: Stefan Hajnoczi <[email protected]>
Acked-by: Philippe Mathieu-Daudé <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

Author: ebblake

tests/qemu-iotests/qcow2.py

@@ -2,6 +2,8 @@
 #
 # Manipulations with qcow2 image
 #
+# Copyright (C) 2012 Red Hat, Inc.
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or

tests/qemu-iotests/qcow2_format.py

@@ -1,6 +1,7 @@
 # Library for manipulations with qcow2 image
 #
 # Copyright (c) 2020 Virtuozzo International GmbH.
+# Copyright (C) 2012 Red Hat, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by