Fixes for gangliad min and max aggregation. #5015
Fixes for gangliad min and max aggregation. #5015

Also fix for specifying a ganglia update interveral
smaller than 20 seconds (probably only useful when testing).

htcondor/htcondor,htcondor/htcondor,neurodebian/htcondor,neurodebian/htcondor,htcondor/htcondor,neurodebian/htcondor,neurodebian/htcondor,htcondor/htcondor,neurodebian/htcondor,neurodebian/htcondor,htcondor/htcondor,neurodebian/htcondor,neurodebian/htcondor,htcondor/htcondor,htcondor/htcondor,neurodebian/htcondor,htcondor/htcondor