The capability was usable since qemu 1.3 so we can remove all the
detection code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
For versions where we can probe that the arguments are optional we can
perform the probing by a schema query rather than sending a separate
command to do so.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
