Enhance V3 routers to store basic resource description

Part of JSON Home is providing a description of each resource
provided by the API. With this change, when resources are added
some basic description data required for JSON Home can be provided
and will be stored and made available.

bp json-home

Change-Id: I504cfd321f45e27f58b1998efc70e30a17805b74
Merge "Enhance V3 routers to store basic resource description"