We have a few cases in qemuxmlconftest that cover the ability
to set <title> and <description> for a guest as a side effect.
Introduce an explicit case for the functionality in
genericxml2xmltest, as it's not specific to the QEMU driver.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>