[netmod] instance file parsing

[Andy Bierman <[e-mail]>]

Hi,

I don't see much standards value in this draft so far.
It seems the parser of the file needs to know the YANG library information
for the instance file data in some out-of-scope non-standard manner.
This is what we already have today just by naming the file in a specific
way.

Is the intent that the instance-data-set leafs will be used to determine
the module revisions, features, and deviations used in the children
or the 'data' node?

Andy