Tutorials cleanup

See merge request !10

Pass on the tutorials to (i) verify that all parts are complete (did not run the installation procedures); (ii) updated instructions on how to select the Python version; (iii) general aestetic changes.

doc/fix: add instructions for ngsdn-tutorial mininet

See merge request !9

NetworkX 22 P4 workshop

See merge request !7

fix(device): avoid conversion to canonical bytes

See merge request !8

Also, remove unecessary conditions prior to rule
insert/update/delete operations

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

- fix wrong import of TaskScheduler in _ServiceHandlerAPI interface and related files

fix(automation): ztpUpdate loop resolved

See merge request !6

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

- Removed deprecated Database Model within Service
- Corrected constructor signature of ServiceHandler interface
- Removed unneeded file in L3NMEmulated Service Handler
- Removed unused imports from TAPI Service Handler

- Removed deprecated PathComputationElement class
- Migrated old L3NMOpenConfig Service Handler to the new framework
- Removed unneeded file in L3NMEmulated Service Handler

OpenConfig Driver:
- added default endpoint type in case it cannot be retrieved from the remote device
- corrected network_instance/edit_config.xml template; wrong XML format

- polished configuration of VSCode IDE

- updated code repository to clone from

feat(policy): policy rule add/update/delete RPCs

See merge request !3

- Added basic support for ACL rules
- Corrected unitary tests

- solved bug with JSON descripotor file load.

WebUI:
- added icons for optical roadm and optical transponder

Common:
- added missing device types

Device:
- added missing emulated device driver mappings

Common:
- added device type for emulated pakcet switches

PathComp:
- added layer mapping for emulated pakcet switches

- Fixed endpoint UUIDs of OLS device, otherwise cleanup crashes due to different endpoint UUIDs randomly generated.
- Fixed create/delete service tests

- Corrected delete config rules in L2NMEmulated/L3NMEmulated/TAPI Service Handlers.
- Commented unneeded settings in L2NMEmulatedServiceHandler Config Rules

- added wait control while MonitoringDB is starting

- Implemented generic MutexQueues class
- Implemented sequentialization of operations in Device component to prevent data corruption and race conditions

- Added script to generate topologies and services using DC_CSGW_OLS
- Corrected script to generate topologies and services using DC_CSGW_TN_OLS
- Corrected resources imported by functional tests

- corrected components imported by the tests and default my_deploy.sh

- corrected deployment name in manifest file
- added resource requests and limits for monitoring server container

- Activated "Grafana" link in top menu
- Implemented onboarding of devices + configuration from JSON descriptor files
- added device status in device details page
- created new grafana dashboard for new PostgreSQL-based monitoring database
- updated deploy.sh script with correct configuration of Grafana monitoring datasource and new dashboard