add cache score function
add cache score function

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