Fixed the L3 security status KPIs monitoring in CentralizedAttackDetector component and cleaned the CentralizedAttackDetector service implementation

- Renamed DependencyResolver to TaskScheduler
- Enhanced TaskScheduler with an extensible Task API framework and extensible dependency resolver
- Created TaskExecutor providing an extensible task execution environment
- Removed in-memory database; now is stateless and interrogates/updates Context when needed
- Extended gRPC servicer to use new TaskScheduler
- Removed unneeded files and re-organized helper methods
- Extended ServiceHandlerAPI; now SetEndpoint/DeleteEndpoint enables to configure/deconfigure a connection
- Moved ServiceHandlerFactory-related methods to the appropriate file
- Created ConnectionExpander to resolve from ERO-like paths to lists of links
- Created basic tasks: ServiceSetState, ServiceDelete, ConnectionConfigure, ConnectionDeconfigure
- Added skeleton for L2NMEmulatedHandler (to be adapted, now is a copy of L3NM one)

Frontend:
- added show logs script
- improved config settings to get address and port of the backend
- improved logging of _Algorithm
- implemented KDisjointPath logic

Backend:
- added show logs script

Modifications that enable the use of a single script that builds an image, tests and reports coverage for a specific component.

Signed-off-by: gkatsikas <gkatsikas@ubitech.eu>

- partial integration of PathComp with Service
- ongoing work

- added exposition of redis-tests service for testing with Redis backend
- moved delete logic from Context Servicer to ORM components
- added support for constraints of different kinds

Common scripts:
- added script to dump logs of all pods/containers in a namespace

ECOC'22 demo:
- removed unneeded scripts and files
- cleaned up run_test scripts
- added run test and coverage script
- added deploy_specs.sh
- added scripts to generate JSON descriptors

OFC'22 demo:
- added deploy_specs.sh

- removed redundant scripts and files
- added missing show_logs_slice.sh script
- partially arranged tutorial page

Common:
- added helper scripts

FrontEnd:
- corrected import paths
- added missing parameters in test
- refined creation of backend request

Device:
- Removed obsoleted run_tests_locally-device.sh script
- Moved imports from *.proto folder to common.proto folder
- Removed device's genproto.sh script
- Minor code and linting fixing
- Arranged requirements to accelerate Docker image creation
- Updated Dockerfile
- Arranged GitLab CI/CD pipeline
- Corrected usage of ConfigRules to use new custom ConfigRules

Monitoring:
- Moved imports from *.proto folder to common.proto folder
- Removed monitoring's genproto.sh script

- removed unneeded comments from run_tests_locally*.sh in scripts folder
- minor improvement in report_coverage_all.sh
- added script to expose through the ingress controller the gRPC interfaces through the ingress controller for debug purposes

- moved OFC'22 helper scripts to show logs to main scripts folder and adapted to use scenario definition variables

- moved old deployment scripts to scripts/old
- added NGINX-based ingress controller to expose http-based endpoints from a single connection point
- adapted webui K8s manifest to be used with the ingress controller
- improved install_requirements.sh (renamed from install_development_dependencies.sh) to prevent collision of package versions
- adapted script to show deployment
- created functional example settings script my_deploy.sh
- created improved deploy.sh script
- added first version of the deployment tutorial. Run Experiments and Development are work in progress.

- Arranged .gitignore & .gitkeep files in common proto folder
- Created specific run_tests_locally script for Context component
- Moved imports from *.proto folder to common.proto folder
- Adapted common.tools.object_factory to new proto definitions for ConfigRule and Constraint
- Extended common.tools.type_checkers to new proto definitions for ConfigRule and Constraint
- Removed context's genproto.sh script
- Adapted Events generated to new timestamp data type
- Minor code and linting fixing

- initial skeleton (not functional)

- corrected unitary test file for device component
- arranged clients used by optical centralized attack detector
- Minor corrections in unitary test of Context component
- corrected skeleton for unitary tests of Slice component

- Migrated to use new generic gRPC servicer
- Migrated to use new generic Rest servicer
- Migrated to use new settings framework
- Migrated tests to use new generic servicers and mock's
- Solved bug with endpoint monitors' population (dupplicated sample types due to wrong key generation)
- Use Emulated driver when both driver and device type are not specified
- Separated unitary tests and execution scripts per device driver
- Extracted common unitary test functionalities into separate code files
- Minor code styling/formatting

- relocated/renamed wrongly placed/named scripts
- removed unneeded scripts
- added missing headers in scripts

new development of microwave device - implemented the Api to get configurations, create and delete services

- Added run-test-locally specific for device component.

L3NMEmulated/L3NMOpenConfig Service Handlers:
- Added routing policy configuration rules
- Corrected unitary tests incorporating missing configuration attributes.

- Added Routing Policies as special resource for interrogation during initialization
- Added flags in unitary tests to control which tests to be executed in OpenConfig.
- Added run-test-locally specific for device component.

OpenConfig Driver:
- Implemented routing policy templates, parsing and configuration.
- Implemented retry decorator for NetConf client.