HTCONDOR-1120: Document undocumented cron job ad attributes
HTCONDOR-1120: Document undocumented cron job ad attributes

htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor