- initial partial definition

- Created placeholders to start implementation

- added pseudocode
- backup WORK IN PROGRESS

- Added missing special resource key

- backup WORK IN PROGRESS

- backup WORK IN PROGRESS

- Added device type "TeraFlowSDN controller"
- Added driver type for IETF L2VPN
- Updated corresponding components

Merge branch 'feat/slice-grouping' of https://labs.etsi.org/rep/tfs/controller into feat/device-ietf-l2vpn

Merge branch 'release/2.0.1' of https://labs.etsi.org/rep/tfs/controller into feat/device-ietf-l2vpn

- Corrected termination conditions

- Added files

- Reduced log level in MetricsExporter

- Corrected logic, form and page to manage/monitor load-gen component

- Removed unneeded log messages/reduced log levels

- Corrected Constraint definitions
- Corrected termination conditions
- Added randomness in constraint values

- Minor cosmetic changes in code
- Addition of missing close methods

- Corrected slice-to-subslice db schema
- Corrected removal of endpoints

- Corrected Constraint definitions

- Corrected Constraint definitions in example descriptors

- Corrected Constraint definitions in unitary tests

- Corrected Constraint definitions

- Corrected inference of pathcomp algorithm and parameters
- Removed unneeded log messages/reduced log levels

- Updated to use specific SLA Constraints together with Custom constraints
- Updated related unitary tests

- corrected parsing of slice descriptors

- added command to update slice groups when grouping

- added missign script show logs load generator

- updated grafana slice-grouping dashboard queries
- updated load-gen request form

- removed unused import in unitary test

- fixed check of endpoints in SetService
- fixed check of endpoints in SetSlice
- fixed slice-subslice relationship

- implemented missing methods

- implemented missing methods

- removed unneeded log message

- minor cosmetic changes

- updated monitoring table name