Report on the OpenShift pods in xdmod

[Robert Baron]

This is to generate line items for the invoices. The line items are the sessions, that is the time the pod is running, so each start and stop of a pod as in:

start timestamp, stop timestamp, pod name, CPU, Mem, disk

Xdmod doesn't have the notion of a pod, though we are telling xdmod that it is a job. Job performance is reported using supremm (certainly getting MEM). It is my current assumption that the HPC cluster can shared among several jobs or devoted to a specific job. So this depends on the configuration of Supremm.

This is split from (#189) and is currently being blocked by (#170)