/etc/cron.d/moodle is in moodle 3.0.3+dfsg-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | # Regular cron jobs for the moodle package
*/15 * * * * www-data [ -f /usr/share/moodle/admin/cli/cron.php ] && /usr/bin/php -f /usr/share/moodle/admin/cli/cron.php > /dev/null
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