[CentOS] missing run-parts in /etc/crontab

hello,

after a Centos 6 fresh install, I don't see any run-parts scripts in
/etc/contab
like in the 5.x releases :

# run-parts
01 * * * * root run-parts /etc/cron.hourly
02 4 * * * root run-parts /etc/cron.daily
22 4 * * 0 root run-parts /etc/cron.weekly
42 4 1 * * root run-parts /etc/cron.monthly

was it moved somewhere else ?  am I missing any package ?

thanks,
Tom