$croncmd = "timeout -s 15 1000 nice -n 19 puppet agent --onetime --no-daemonize --logdest syslog > /dev/null 2>&1"

cron { "puppetd":
            command => $croncmd,
            user    => "root",
            hour    => "*",
            minute  => "*/15",
            ensure  => present,
            environment => [ 'PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/opt/puppetlabs/bin', 'MAILTO=/dev/null', ]
    }