1) Yang handler file
2) Hardware inventory file
3) Minor changes

- Updated test for IPInfusion OcNOS

- intermediate step towards supporting configuration of OcNOS devices

- Added test for IPInfusion OcNOS

- Corrected Jinja template for edit-config interface/subinterface

- Fixed modified ingress controller settings to fit with endpoints exposed by NBI component

- Rolling back malformed config rules, left backup for future integration

- Rolling back malformed config rules, left backup for future integration

- Rolling back malformed config rules, left backup for future integration

- Rolling back malformed config rules, left backup for future integration

- Rolling back malformed config rules, left backup for future integration

- Minor style fixing

- Cosmetic changes

- Merged logics to manage composition of config rules

- Add MTU to subinterfaces
- Cosmetic improvements

- Disabled IPInfusion custom fields in table connections
- Corrected interface handling messages

- Correct order of config rules
- Correct attribute names

- Recovered removed blocks
- Adapted IP address assignment to interfaces being part of a network instance

- Fixes in per-vendor specificities
- Cosmetic improvements

- Fixes in per-vendor specificities
- Renamed sequence_id to statement_name

- Reduced level of some debug log messages

- Reactivated tests

- Corrected tests create/delete service unidir/bidir
- Added run-tests-locally.sh script
- Removed unneeded README.md file

- Corrected config generation in TaskExecutor::configure_optical_device()

- Added log message to debug issue

- Deactivated unneeded tests

- Corrected case in *opticalconfig* symbols

- Corrected format of URLs in OpticalTools.py

- Rebuilt gRPC proto files

- Corrected format of optical controller URL's port number