Pass config dict to each module

ConfigManager now has a get_config method. Use as follows (see main.py):

config = ConfigManager(system_name=args.system).get_config()
power_manager = PowerManager(compute_node_power, **config)
flops_manager = FLOPSManager(**config)
layout_manager = LayoutManager(args.layout, args.debug, **config)
args_dict['config'] = config
sc = Scheduler(power_manager, flops_manager, layout_manager, cooling_model, **args_dict)