add interface config for additional interfaces on debian

hetzner/autoinstall/templates/post-install.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-
+DEBIAN_INTERFACES_CONFIG=/etc/network/interfaces
 add_rfc3442_hook() {
   cat << EOF > /etc/initramfs-tools/hooks/add-rfc3442-dhclient-hook
 #!/bin/sh
@@ -49,3 +49,11 @@ echo "DEVICE={{ autoinstall_initramfs_interface }}" >> /etc/initramfs-tools/init
 # Update system
 apt-get update >/dev/null
 apt-get -y install cryptsetup-initramfs dropbear-initramfs
+
+{% for interface in ansible_interfaces %}
+{% if "ens" in interface and interface != "ens3" and ansible_distribution|lower == "debian" %}
+echo "" >> $DEBIAN_INTERFACES_CONFIG
+echo "auto {{ interface }}" >> $DEBIAN_INTERFACES_CONFIG
+echo "iface {{ interface }} inet dhcp" >> $DEBIAN_INTERFACES_CONFIG
+{% endif %}
+{% endfor %}