Extraction of node I/O metadata

[vsoch]

Not sure the extent to which ior will be used, but I want to put notes here for how we can eventually automate generation of the subsystem metadata for nodes.

• Take in user request for names to parse from /proc/mounts or some other filtering method
• Parse /proc/mounts to find names and get mount points (and other featresu0
• For each mount point, we need quota (can use IOR) but...
  • Parallelism is based on the controller. We can look up device specs (and maybe find them represented somewhere online?) Aside from checking a website.

Ping @hariharan-devarajan just for future discussion - I'm going to manually create this for now so I can develop the rainbow plumbing. 🚽