HTCONODR-1193 add -W option to singularity exec to mount /tmp under scratch.
HTCONODR-1193 add -W option to singularity exec to mount /tmp under scratch.

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