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

- improved loggers in decorators for client and server methods
- corrected error in delay_exponential for retry decorator

- Added RequestSlice to Interdomain
- Separated Create and Update in Slice

- Implemented support for Slices
- missing: unitary tests

- defined test objects (contexts, topologies, devices, links, service)
- updated bootstrap test script
- updated create service test script
- updated deploy script

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

Merge branch 'feat/slice-service' of https://gitlab.com/teraflow-h2020/controller into feat/interdomain

Extended WebUI, OpenConfig Driver support and functional test for OFC'22

See merge request teraflow-h2020/controller!97

Enable config of route-tables and monitoring in packet devices

See merge request teraflow-h2020/controller!98

Clarifications and corrections applied to release v1

See merge request teraflow-h2020/controller!96

Post-release arrangements:

See merge request teraflow-h2020/controller!95

Release v1.0.0

See merge request teraflow-h2020/controller!94

Cleanup and addition of license headers to files

See merge request teraflow-h2020/controller!93

Resolved some Device OpenConfigDriver issues

See merge request teraflow-h2020/controller!92

Feat/add ztp add bind and serializer

See merge request teraflow-h2020/controller!82