Merge branch 'develop' into feat/242-cttc-l3slice-ietfslice-service-handler-is-required

proto/context.proto

proto/kpi_sample_types.proto

scripts/run_tests_locally-analytics-backend.sh

scripts/run_tests_locally-analytics-frontend.sh

scripts/run_tests_locally-nbi-ietf-slice.sh

scripts/run_tests_locally-telemetry-backend.sh

scripts/run_tests_locally-telemetry-emulated.sh

src/analytics/backend/service/AnalyticsBackendService.py

src/analytics/backend/service/AnalyzerHandlers.py

src/analytics/backend/service/AnalyzerHelper.py

src/analytics/backend/service/DaskStreaming.py

src/analytics/backend/service/Streamer.py

src/analytics/backend/tests/messages.py

src/analytics/backend/tests/messages_analyzer.py

src/analytics/backend/tests/test_backend.py

.../frontend/service/AnalyticsFrontendServiceServicerImpl.py

src/analytics/frontend/tests/messages.py

src/analytics/frontend/tests/test_frontend.py

src/common/tools/context_queries/Slice.py

src/common/tools/kafka/Variables.py