Helper function for getting system name
Helper function for getting system name

This is for a forthcoming generic regression test. This way, we don't
have the input parsing of the system name floating around in multiple
places, we can just grab it from the Simulation.

vikramvgarg/grins,nicholasmalaya/grins,nicholasmalaya/grins,vikramvgarg/grins,cahaynes/grins,cahaynes/grins,vikramvgarg/grins,cahaynes/grins,vikramvgarg/grins,cahaynes/grins,nicholasmalaya/grins,cahaynes/grins,nicholasmalaya/grins,cahaynes/grins,vikramvgarg/grins,vikramvgarg/grins