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

Resolve "(CTTC) Incorrect endpoint lookup in NBI ETSI BWM plugin"

See merge request !196

- Updated header of test launcher for IPInfusion OcNOS SBI driver

- 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

Merge branch 'develop' of ssh://gifrerenom_labs.etsi.org/tfs/controller into feat/110-cttc-incorrect-endpoint-lookup-in-nbi-etsi-bwm-plugin

Merge branch 'feat/155-fix-tfs-api-exposition-in-ingress-controllers-for-multi-tfs-tests' into 'develop'

Resolve "Fix TFS APi exposition in ingress controllers for multi-TFS tests"

See merge request !234

- 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

Merge branch 'develop' of ssh://gifrerenom_labs.etsi.org/tfs/controller into feat/110-cttc-incorrect-endpoint-lookup-in-nbi-etsi-bwm-plugin

Merge branch 'feat/152-install-requirements-script-needs-to-be-updated-for-libyang-installation' into 'develop'

Resolve "Install Requirements script needs to be updated for libyang installation"

See merge request !233

Merge branch 'develop' of ssh://gifrerenom_labs.etsi.org/tfs/controller into feat/152-install-requirements-script-needs-to-be-updated-for-libyang-installation

Resolve "Update license headers for Release 3"

See merge request !224

- Updated skip filters

- Updated copyright line
- Updated ignore filters

- Updated copyright line

- Code cleanup
- Not finished

- Corrected regular experssions
- Not finished

- Added missing skip patterns
- Added multiple old copyright lines
- Added logic to keep new-line chars
- Not finished

- Updated file mode update in update_license_headers.py script