Check the file /etc/pihole/pihole-FTL.conf exists before trying to use
it.
without the patch I get, each day, in my logs:
sed: can't read /etc/pihole/pihole-FTL.conf: No such file or directory
I use a variable FTLconf to not repeat the file name twice.
Signed-off-by: Ludovic Rousseau <ludovic.rousseau@free.fr>