rig major updates

rig/ctrl/cluster.sh

@@ -15,6 +15,7 @@ up() {
         # Say what this profile locks in BEFORE spending minutes building it:
         # the kind config is fixed at creation and cannot be changed later.
         echo "creating cluster '$CLUSTER' from profile '$PROFILE_NAME'"
+        echo "  overlay     ${OVERLAY_DIR:-none}"
         echo "  kind config ${KIND_CONFIG}"
         echo "  nodes       $NODES"
         echo "  image       $NODE_IMAGE"