Documentation: Updating yang library to reflect current openconfig modules

[adam-hamilton]

I would like to update the openconfig models to reflect the latest in https://github.com/openconfig/public.git

In order to make this work I need to generate an updated file containing JSON-encoded data model specification in the YANG library format.

How can I generate a version of openconfig.json which reflects updated model data?
https://github.com/networktocode/ntc-rosetta/blob/develop/ntc_rosetta/yang/openconfig.json

Thank you