Need better filtering mechanism with mfistatus.py

[gcooper]

There are some firmware "critical level" items that ultimately do not belong in the logs as it results in noise from an end-user perspective (example: fan failure noise for non-existent fans), and there are other messages that we might want to capture at other levels as well (fatal, some warn). A document is attached from SGI provided by LSI [1] which describes some of the different levels and messages available to developers that can be filtered out (see Appendix A). These messages might need massaging / fudging as they come straight from the firmware image and not directly from a driver, etc. We might need to obtain more up-to-date documentation from LSI in order to properly integrate our software into MegaRAID controllers (probably a good idea as iXsystems has a really good working relationship with LSI :)..).

1. ​http://techpubs.sgi.com/library/manuals/0000/860-0488-001/pdf/860-0488-001.pdf

[gcooper]

*sigh* the docs are too big to attach here. Sorry 'bout that...