kamctl: address dump command to list subnets

- address table is loaded in memory inside two structures, a matter
  whether it is a IP or net address. Dump both structures via kamctl
  address dump

utils/kamctl/kamctl

@@ -1243,6 +1243,7 @@ permissions_address() {
 		dump)
 			require_ctlengine
 			$CTLCMD address_dump
+			$CTLCMD subnet_dump
 			;;
 		show)
 			require_dbengine