Added new KPI Sample Types

See merge request !18

- pre-merge fixes

- fixed show_logs_monitoring script
- Context Queries: added get_service, get_slice, get_topology methods
- Context Queries: corrected bug with get inter topology
- Moved old Build/Load Descriptor scripts to common
- Fixed retrieval of objects loaded from descriptors
- Deactivated close of clients in descriptor loader
- Moved MockOSM library to common tests/tools folder

Compute component:
- updated to use new context query methods
- updated to use new MockOSM location

OFC'22 tests:
- updated MockOSM paths
- updated fixtures
- added loggers
- corrected WIM service definitions
- improved verification of KPIs created and values returned
- optimized removal of entities
- optimized service discovery in delete test
- added on-line logging to tests

Enable P4 Driver to control multiple switches

See merge request !26

- updated WIM service settings

- updated test scripts

- updated descriptor loading framework

- updated MockOSM constants and helper methods

- updated generic descriptor loader tool
- updated scenario loader for automated tests

- fixed imports for bootstrap devices

- restored list of components

- migrated to new scenario loading framework

- migrated to new descriptor loading framework

- new generic descriptor loader tool
- new scenario loader for automated tests

- Code under migration to new Device, Service, Slice, PathComp, WebUI logic.

Integrate NFV-SDN'22 demo

See merge request !24

- added missing scenario README.md file

- activated build of gateway in deploy.sh script

- removed unused/unneeded files

- activated deployment of Grafana dashboard

- reduced log level of some components

fix(policy): Add policy kubernetes manifest file

See merge request !23

Improving scripts that launch all the tests of ofc22 and ecoc22 at once

See merge request !19

XR Driver

See merge request !20

- cleanup .gitignore

- added missing Python code file headers

- updated repo URL in readme file

Modifying the number of KPIs necessary so that the tests are more suitable for being run after other tests.