MT#11393 Install vlan and related network tools on all systems

It's PITA to install an internal system which depends on vlan
tools being present to get network acess but not having vlan
tools installed. So far we installed the vlan plus related tools
only when the vlan boot option was present during deployment
time. This might be relevant also for our ngcp users and it
should be safe to always include those tools. So we decided to
always include vlan (+ related) tools on all our installations.

Change-Id: I17bc5b9aba967d13bebe2db631e9167e693b09bc

deployment.sh

@@ -1047,6 +1047,11 @@ acpi acpid acpi-support-base
 # be able to login on the system, even if just installing plain Debian
 openssh-server
 
+# support bridge / bonding / vlan
+bridge-utils
+ifenslave-2.6
+vlan
+
 # packages d-i installs but we ignore/skip:
 #discover
 #gettext-base
@@ -1083,15 +1088,6 @@ lvm2
 EOF
 fi
 
-if "$VLAN" ; then
-  cat >> /etc/debootstrap/packages << EOF
-# support bridge / bonding / vlan
-bridge-utils
-ifenslave-2.6
-vlan
-EOF
-fi
-
 if [ -n "$PUPPET" ] ; then
   cat >> /etc/debootstrap/packages << EOF
 # for interal use at sipwise