deployment: set up mgmt configuration for ngcpcfg

This works on a freshly deployed PRO system:

| ngcpcfg init-mgmt $MGMT_IP

Now let's try to include this step also during deployment.

From: Michael Prokop <mprokop@sipwise.com>

deployment.sh

@@ -1314,6 +1314,8 @@ if "$PRO_EDITION" ; then
 
     ssh $PEER ngcpcfg pull
     ngcpcfg build
+
+    ngcpcfg init-mgmt $MANAGEMENT_IP
   fi
 EOT
 fi