[libvirt] [PATCH] Fix virsh {net,pool}-edit

The dumpxml commands for networks and pools don't support any flag arguments, and in fact explictly fail if flags != 0. This is not the case for vm dumpxml though, and flags were added to the base 'edit' implementation in virsh recently. The net and pool derivatives were not addressing this difference, so any net-edit or pool-edit attempt currently gives an error like: Network error : invalid argument in virNetworkGetXMLDesc The attached patch is one way to fix this. Thanks to Charles Duffy for the report. - Cole