remove libvirt requirement for discovery client
remove libvirt requirement for discovery client

OpenEdgeComputing/elijah-provisioning,OpenEdgeComputing/elijah-provisioning,cmusatyalab/elijah-provisioning,OpenEdgeComputing/elijah-provisioning,cmusatyalab/elijah-provisioning,OpenEdgeComputing/elijah-provisioning,cmusatyalab/elijah-provisioning,cmusatyalab/elijah-provisioning,cmusatyalab/elijah-provisioning,OpenEdgeComputing/elijah-provisioning,cmusatyalab/elijah-provisioning,OpenEdgeComputing/elijah-provisioning