Excessive data in inventory in Beryllium SR2

Staring in Beryllium SR2, we get ~1440 lines of JSON for table features for every table in every switch, which for OVS results in ~368,640 lines and 18 MB per switch. While I applaud us gathering all the information we can, we need to find a way to make this less painful.

See the attached JSON for querying:
restconf/operational/opendaylight-inventory:nodes/node/openflow:212