Change the default to modern qcow2 as it's supported by all qemu
versions supported by libvirt and `qemu-img` already defaults to
the new format since QEMU 1.7.
Some Unittests require changes to pass, now that version 1.1 is default.
Unittests like `qcow2-1.1.argv` may not be relevant anymore,
Change the default to modern qcow2 as it's supported by all qemu
versions supported by libvirt and `qemu-img` already defaults to
the new format since QEMU 1.7.
Some Unittests require changes to pass, now that version 1.1 is default.
Unittests like `qcow2-1.1.argv` may not be relevant anymore,
