Standard ietf-netconf-monitoring.yang file has been modified to import specific versions of dependencies that could break other mounted devices

Standard ietf-netconf-monitoring.yang has been modified to import specific versions of ietf-yang-types and ietf-inet-types. This is a deviation from standard IETF file. I've gone through the history of this file and it is suggested that this was done to load classes properly.

However this will break other mounted devices that uses the standard version of this file and expect that latest versions of the import modules will be used.

I removed the explicit version from imports, restarted the controller and it worked fine for both controller netconf, and other mounted netconf devices.

So I think we need to look into reverting these changes in the IETF-NETCONF-MONITORING.yang file and maintain the standard IETF version so that it can play well with other devices.