set default time zone to UTC

install/vst-install.sh

@@ -565,6 +565,7 @@ fi
 
 # php configuration
 sed -i 's/short_open_tag = Off/short_open_tag = On/g' /etc/php.ini
+sed -i "s/;date.timezone =/date.timezone = UTC/g" /etc/php.ini
 
 # phpMyAdmin configuration
 wget $CHOST/$VERSION/httpd-pma.conf -O /etc/httpd/conf.d/phpMyAdmin.conf