The new vixie-cron-3.0.1-36.5.2 (build date Aug 25) has /etc/logrotate.d/cron with the "missingok" parameter, even though logrotate-2.6-3 doesn't recognize it. For me the only consequence is an annoying email error message every night.
Grab the errata errata (-37.5.2.)
Commit pushed to master at https://github.com/openshift/origin https://github.com/openshift/origin/commit/d8a00094e1f48247fad91cbb7d5778153749923f Issue 4867 - route links should open in a new window