[ofiwg] getting hardware details from libfabric

[Hefty, Sean]

There has been a long outstanding set of requests to obtain HW specific data from libfabric.  A side discussion brought this topic up again, so I'd like to at least put it on the agenda as a possible feature for 1.7.  As a point of reference, Cisco has implemented a set of provider specific ops to retrieve device specific data.  It's fairly simple, and details are here: 

https://github.com/cisco/usnic_tools/blob/master/usnic_devinfo.c

This feature would obviously only apply to providers that are directly associated with some sort of HW device.

What I would like to start to collect is a list of what sort of attributes would be desirable to report, or what applications or users could make use of.

- Sean