Need time range limit in poms_submission_agent.py...
Currently the poms_submission_agent always requests the jobs since the last time it successfully got job info. However if for some reason a given experiments job list times out, this snowballs, as the bigger time window
of the second and later requests is even less likely to complete in the timeout than the preveious attempt...
What we need is a piece of code in there that slices up the needed time period into requests of a given time width; and if the request timed out previously, to slice it up into smaller pieces than last time(?).
then we can also make that last-time-we-checked dictionary a persistent python "shelf", so we recover better from the agent being off-line.