Context Scalability extensions using CockroachDB + Removal of Stateful database inside Device + other

See merge request !34

- removed unneeded stages

- adapted cockroachdb_client script to be usable in cluster and single mode

- activated Grafana in WebUI
- disabled Context debug endpoint in Ingress controller

- updated log level to INFO

- restored default parameters

- added load generator

- corrected manifest adaptation in tfs.sh

- corrected secret creation in tfs.sh

- minor cosmetic change

- moved creation of secrets from crdb.sh and nats.sh to tfs.sh for safety reasons

- corrected file names

- updated old gitlab.com URLs by new labs.etsi.org URLs.
- updated Context to use secrets generated by CockroachDB and NATS

- reorganized deploy scripts in a new "deploy" folder

- updated deploy scripts to include CockroachDB and NATS
- reorganized deploy scripts in a new "deploy" folder

- corrected CI/CD pipeline unit_test

- corrected CI/CD pipeline unit_test

- corrected CI/CD pipeline unit_test

- corrected test_monitor_kpi unitary test device removal

- corrected per unitary test cleanup

- corrected MockContext in unitary test

- corrected gRPC format of Events in MockMessageBroker

- corrected imports and dependencies of unitary test

- updated instructions
- file cleanup

- corrected imports and dependencies of unitary test

- updated requirements

- corrected dependencies in service component

- updated requirements

- updated and migrated unitary test

- reduced dependencies since it breaks pipeline

- corrected dependencies in service component

- corrected dependencies in service component

- corrected dependencies in service component

- updated pipeline to meet requirements and dependencies

- updated pipeline to meet requirements and dependencies

- added pathcomp to CI/CD unitary tests

- migrated from DEFAULT_CONTEXT_UUID to DEFAULT_CONTEXT_NAME
- migrated from DEFAULT_TOPOLOGY_UUID to DEFAULT_TOPOLOGY_NAME
- migrated from INTERDOMAIN_TOPOLOGY_UUID to INTERDOMAIN_TOPOLOGY_NAME

- removed log messages for testing purposes