Revert "Revert "have the schedd tolerate (not fail) old submits attempting to send x509 attrs.  #5579""
Revert "Revert "have the schedd tolerate (not fail) old submits attempting to send x509 attrs.  #5579""

This reverts commit 6eba24e3b4e3f55767c352fc433918e6838b44ac.

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