qemu-iotests: Ignore indentation in Killed messages

qemu-iotests: Ignore indentation in Killed messages

New bash 5.3 uses a different padding for reporting job status.

Resolves: boo#1246830
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/3050
Signed-off-by: Werner Fink <werner@suse.de>
Message-ID: <aJL8RH8ePPNEteMg@boole.nue2.suse.org>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Tested-by: Martin Kletzander <mkletzan@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit c0df98ab1f3d348bc05f09d1c093abc529f2b530)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>