SlurmProvider does not ask for status of completed jobs, then issues a warning when it does not get status

[benclifford]

the slurm provider avoids asking for the status of completed jobs:

parsl/parsl/providers/slurm/slurm.py

Line 169 in 8b45556

[jid for jid, job in self.resources.items() if not job['status'].terminal]

but then issues a warning (previously a DEBUG level warning, before #3422) when it does not receive status for a job stored in self.resources that it did not get a status for:

parsl/parsl/providers/slurm/slurm.py

Line 208 in 8b45556

logger.warning("Updating missing job {} to completed status".format(missing_job))

This warning is misleading and unnecessarily alarming.

Maybe the list for jobs that were missing from the status report should start the same as the list the provider actually asked.