Merge branch 'develop' of ssh://gifrerenom_labs.etsi.org/tfs/controller into feat/165-cttc-replace-dlt-gateway

Resolve "Job Failed #80694"

See merge request !256

- Test was failing due to a "NotFoundException."
- Replaced with None and made approriate changes in files (Kpi_DB.py and KpiManagerServiceImpl) to handle the None value.

This reverts commit 8503a835.

- added create_kpi_id_request() in kpi_manger test_mesages.py

Resolve "Multiple fixes on KPI Management"

See merge request !254