ServiceHandler update for new PCE compatibility

ServiceHandler update for new PCE compatibility

- Updates to have org-openroadm-service.yang
- Creates new mapping utils
- Implements service-create, service-reroute and service-delete RPCs
- Integrates the Service handler with PCE, Renderer, OLM and network
topology manager
This commit downgrades the Service Handler functions to the servicepath
1.5 YANG specifications so that they match with the PCE current RPCs.
This implies that some RPCs already implemented in servicepath 1.6
(service-reconfigure,service-restoration) will no more be available,
at least until the PCE is upgraded.

Change-Id: I94f2edbcfbde22747871e7eec55ed01e198e40af
Signed-off-by: Shweta <sv111y@att.com>
Co-Authored-By: Dhruv Bhardwaj <db929a@att.com>
Co-Authored-By: Shweta Vachhani <sv111y@att.com>
Co-Authored-By: Masha Dorfman <>
Co-Authored-By: Archana Soundararajan <as7463@att.com>
Co-Authored-By: Juraj Veverka <Juraj.Veverka@pantheon.tech>
Co-Authored-By: Samuel Kontri <samuel.kontris@pantheon.sk>
Co-Authored-By: Andrej Zan <andrej.zan@pantheon.sk>
Co-Authored-By: Milan Fratrik <>
Co-authored-by: Martial COULIBALY <martial.coulibaly@gfi.fr>