Added a Modules option to the VPClusterMonitor
Added a Modules option to the VPClusterMonitor with a default to process all of the modules. Required input is a python array e.g. [0, 5]. If custom module numbers are selected, output plots are reduced to only plots relevant at the module level and only for the selected modules. This reduces the memory usage and processing time somewhat. (e.g. Evts/s = 931.641 for 2 modules vs. Evts/s = 778.513 for all modules).