Initial OR-TAPI mapping: Services

Initial OR-TAPI mapping: Services

- OR service -> TAPI connectivity service mapping
- ConnectivityService utils class
- TAPI context extended to update Connectivity context
- New service: ServiceDataStoreOperations in ServiceHandler blueprint
- 2 new operations in ServiceDataStoreOperations
- TAPI blueprint uses ServiceDataStoreOperations service
- Lighty modifications to create TAPI provider correctly
- Added removal of CEPs in getTopologyDetailsOutput

JIRA: TRNSPRTPCE-425
Change-Id: Ib146a85124359b31fc3c46f09b433a0c9daabfb3
Signed-off-by: errea <errea@eurecom.fr>