/lib/live/config/1090-ssl-cert is in live-config 5.20170112+deb9u1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | #!/bin/sh
## live-config(7) - System Configuration Components
## Copyright (C) 2006-2015 Daniel Baumann <mail@daniel-baumann.ch>
##
## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
## This is free software, and you are welcome to redistribute it
## under certain conditions; see COPYING for details.
#set -e
Init ()
{
	# Checking if package is installed
	if [ ! -e /var/lib/dpkg/info/ssl-cert.list ] || \
	   [ -e /var/lib/live/config/ssl-cert ]
	then
		exit 0
	fi
	echo -n " ssl-cert"
}
Config ()
{
	if [ ! -e /etc/ssl/certs/ssl-cert-snakeoil.pem ] && [ ! -e /etc/ssl/private/ssl-cert-snakeoil.key ]
	then
		make-ssl-cert generate-default-snakeoil --force-overwrite
	fi
	# Creating state file
	touch /var/lib/live/config/ssl-cert
}
Init
Config
 |