Configure CronJobs for PCR-360

NOTE: If migrating a server, this step should be completed after copying the customer data. Also make sure to copy any customer specific jobs from the existing CRON on the old server.  With CentOS 8 ntpdate is no longer available.  The new service is chrony.  The default configuration should work fine without any changes.

*  *  *  *  *   /usr/bin/php /var/www/pcr360/prod/cli/zfcli.php -a cron.events.process -e prod -n 19 -i /var/www/pcr360/configs/pcr360.ini 1>> /var/www/pcr360/prod/logs/cron.log 2>&1
00 00 *  *  *   /usr/sbin/ntpdate pool.ntp.org
00,05,10,15,20,25,30,35,40,45,50,55 * * * * /var/www/pcr360/prod/external/syschk.sh