(#4133)  React appropriately when an attempt to terminate a purged instance fails. Also fixes a bug in the CANCEL/CANCEL_CHECK loop that would allow the polling delay to be incorrectly bypassed.
(#4133)  React appropriately when an attempt to terminate a purged instance fails.
Also fixes a bug in the CANCEL/CANCEL_CHECK loop that would allow the polling
delay to be incorrectly bypassed.

djw8605/htcondor,zhangzhehust/htcondor,djw8605/htcondor,djw8605/htcondor,zhangzhehust/htcondor,zhangzhehust/htcondor,djw8605/htcondor,neurodebian/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,zhangzhehust/htcondor,neurodebian/htcondor,djw8605/htcondor,zhangzhehust/htcondor,neurodebian/htcondor,djw8605/htcondor,neurodebian/htcondor,djw8605/htcondor,neurodebian/htcondor,htcondor/htcondor,neurodebian/htcondor,zhangzhehust/htcondor,djw8605/htcondor,djw8605/htcondor,zhangzhehust/htcondor,htcondor/htcondor,neurodebian/htcondor,neurodebian/htcondor,htcondor/htcondor,zhangzhehust/htcondor,neurodebian/htcondor,zhangzhehust/htcondor,htcondor/htcondor,htcondor/htcondor