Compute:
- added support for Slice creation when VPLS service is requested instead of VPWS

Context:
- minor improvements in client class logging
- added slice events to EventsCollector
- minor bug fixes in SliceModel

Interdomain:
- Implemented basic workflow

Monitoring:
- fixed requirements versions

Service:
- minor improvements in client and server logging

Slice:
- Implemented basic workflow

OECC/PSC'22 functional test:
- updated test objects
- updated deployment script
- updated exposed services

- formatted and corrected interdomain and slice proto files
- regenerated associated Python code files per component

Updated gRPC proto files to prevent trouble with KPI sample types in devices, also updated files related to this issue.

- Corrections in Service to prevent errors in GitLab CI/CD pipeline.
- Minor improvements in random classes.

- Added REST API Server to Compute component
- Factorized get settings from environment variabes into common method get_setting

Fix renaming of compute.proto methods from snake-case to camel-case. Added minor naming improvements.