Display deployment script version in logo

From: Michael Prokop <mprokop@sipwise.com>

deployment.sh

@@ -106,7 +106,7 @@ logo() {
 +++ Grml-Sipwise Deployment +++
 
 $(cat /etc/grml_version)
-Host IP(s): $(ip-screen)
+Host IP(s): $(ip-screen) | Deployment version: $SCRIPT_VERSION
 $(lscpu | awk '/^CPU\(s\)/ {print $2}') CPU(s) | $(/usr/bin/gawk '/MemTotal/{print $2}' /proc/meminfo)kB RAM | $CHASSIS
 
 Install ngcp: $NGCP_INSTALLER | Install pro: $PRO_EDITION | Install ce: $CE_EDITION