Change 'null' to 'undefined' in the JOB_ROUTER_DEFAULTS (SOFTWARE-2440)
Change 'null' to 'undefined' in the JOB_ROUTER_DEFAULTS (SOFTWARE-2440)

opensciencegrid/htcondor-ce,opensciencegrid/htcondor-ce,djw8605/htcondor-ce,brianhlin/htcondor-ce,brianhlin/htcondor-ce,matyasselmeci/htcondor-ce,djw8605/htcondor-ce,matyasselmeci/htcondor-ce,brianhlin/htcondor-ce,djw8605/htcondor-ce,bbockelm/htcondor-ce,opensciencegrid/htcondor-ce,bbockelm/htcondor-ce,matyasselmeci/htcondor-ce,bbockelm/htcondor-ce