added stun.$NETMAKER_BASE_DOMAIN echo to alert user of dns entriesrequired.

scripts/nm-quick.sh

@@ -429,6 +429,7 @@ set_install_vars() {
 	echo "          dashboard.$NETMAKER_BASE_DOMAIN"
 	echo "                api.$NETMAKER_BASE_DOMAIN"
 	echo "             broker.$NETMAKER_BASE_DOMAIN"
+	echo "               stun.$NETMAKER_BASE_DOMAIN"
 
 	if [ "$INSTALL_TYPE" = "ee" ]; then
 		echo "         prometheus.$NETMAKER_BASE_DOMAIN"