- updated device_set and link_set to support placeholder creation

- improvements in details pages

- extended AddDevice to create a device placeholder and get the correct device UUID

- aggregated error messages in separate file
- corrected update of operational status
- corrected update of resulting device configuration from device instead of composing from rules (for simplicity)
- corrected retrieval of device_uuid in MonitorDeviceKpi
- factorized code to compose gRPC device_config rules from raw config rules
- code cleanup
- added missing logs in unitary test for emulated device driver

- added missing log messages in MockContext

- updated dump of config rules in service and slice entities

- corrected populate_endpoints method

- corrected report of configuration rules in device

- corrected report of configuration rules in device

- corrected report of configuration rules in device
- minor cosmetic code changes

- corrected device driver selectors

- removed internal in-memory database
- added storage of connect-related config rules in context and added driver pre-loading when Device component starts
- re-organized code of EmulatedDriver
- re-organized code to improve clarity
- minor code bug resolutions
- code cleanup

- added get_device helper method

- added human-readable names to Topology graph

- minor code cleanup

- deactivated DEBUG log level

- forced context/topology uuids in backend request for simplicity; to be elaborated
- improved formatting of request to be sent to backend in logs

- reduced log level of InterDomain-related methods to DEBUG

- activated DEBUG log level

- added feature for deactivating teardowns
- added feature to support infinite-loop request generation

- defined extra-long hold time to have time to validate configurations

- corrected slice_unset query filters

- corrected slice_unset query filters

- corrected slice_unset query filters

- removed check of reply.entity_id==request.entity_id; context computes UUID-like identifiers based from requested identifiers for performance reasons

- added context "admin" as default for slices

- corrected SetService when no endpoints are provided

- corrected device name retrieval
- corrected composition of router_ids and and IP addresses
- minor code formatting

- deactivated Grafana pannel

- corrected service name of load generator

- corrected load generator commands

- Corrected Dockerfile

- added dependencies for load generator

- Converted load_gen tool into a microservice
- Added simple WebUI page to manage it
- Created manifests, Dockerfile, etc.
- Created proto file to manage the load generator

- improved device details page

Interdomain Component

See merge request !42