Automatically update date/time

This is not needed anymore, any current Debian installation will do it correctly. I keep this around because sometimes certain virtual machines have problems after SLEEP to get the correct date.

Debian can automatically update its date/time:

• check the currente date/time

date

• install the service

apt-get install systemd-timesyncd

• enable it

timedatectl set-ntp true

• check the currente date/time

date