[fix] Add fake-hwclock to avoid RTC 1970 date

A20 Allwinner seems to have a RTC but i think this one can't work when the board is shutdown (during several minutes/hours/days ?).  This package register the last date and set it early in the boot process.

scripts/install

@@ -32,7 +32,7 @@ fi
 ynh_webpath_register vpnclient $domain $url_path || ynh_die "problem on domain/path availability" 1
 
 # Install packages
-packages='php5-fpm sipcalc dnsutils openvpn curl'
+packages='php5-fpm sipcalc dnsutils openvpn curl fake-hwclock'
 export DEBIAN_FRONTEND=noninteractive
 
 sudo apt-get --assume-yes --force-yes install ${packages}