Fixed the L3 security status KPIs monitoring in CentralizedAttackDetector component and cleaned the CentralizedAttackDetector service implementation

Device:
- fixed problem with subscription handling

- Improved look & feel of service and slice pages.

Common:
- added slice to EventTools

OFC'22 tests:
- corrected OFC'22 delete service test to identify appropriate service to be deleted
- removed usage of events for testing

Compute:
- remove diversity constraint when not populated

Device:
- removed unused field in database and code polishing

Service:
- migrated L3NMEmulatedServiceHandler to the new API
- polishing of code

Second part of harmonizing L2NM and L3NM according to the latest changes. Small fixes around the code.

Including missing components to the list of components in the my_deploy.sh file and including generating gRPC Python code to the OFC'22 tutorial.

- updated OFC'22 test scripts with source of env variables
- activated DEBUG logs in Device and Service components
- added Slice as dependency of Compute
- removed creation of services in Compute, all goes through Slice
- Added missing default constraints in PathComp Frontend
- added logic in Slice to identify if its L2 or L3

- corrected endpoint identifiers in bearer definitions in Compute

- adding deploy of slice component
- homogeneized bearer definitions in Compute

Fix/ofc22 tests

See merge request teraflow-h2020/controller!193

Integration of ECOC'22 Demo

See merge request teraflow-h2020/controller!192

Merge branch 'develop' of https://gitlab.com/teraflow-h2020/controller into feat/ecoc22-dc-interconnect-disjoint

OpenConfigDriver: implemented support for ACLs and L2VPNs

See merge request teraflow-h2020/controller!190

feat: P4 device driver

See merge request teraflow-h2020/controller!185

style(service): fix style issues in service handler

See merge request teraflow-h2020/controller!187