HTCONDOR-485 Fix ssh_to_job from a personal condor
HTCONDOR-485 Fix ssh_to_job from a personal condor

get_user_uid doesn't work correctly in this case, so just
call nsenter with getuid()

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