Integrate NFV-SDN'22 demo

Manifests:

• Reduced requests and limits per component
• Reduced log levels per component

Proto:

• dlt_connector.proto: Added TopologyId as filter for Record* methods
• dlt_connector.proto: Added methods RecordAllLinks/RecordLink

Scripts:

• Added show_logs* helper scripts for DLT components
• Added environment variable "TFS_SKIP_BUILD" to enable reusing latest built docker images

Common:

• Added/corrected global constants related to Interdomain/DLT
• Added DeviceType "NETWORK" to represent an abstract domain

Common - ContextQueries:

• Created generic helper Context queries

Common - gRPC Tools:

• Added support for custom scalar-encoded constraints

Common - ObjectFactory:

• Added support for slice-related entities

Common - Testing:

• MockGateway Servicer: Fixed error checking/reporting
• MockGateway Servicer: Improved parsing/encoding of JSON-encoded data of records

Context component:

• EventsCollector: Reorganized to enable auto-reconnection
• SliceModel: Added slice-owner fields into
• SliceModel: Resolved conflicting primary key related to endpoint identifiers

DLT Connector component:

• DltConnectorClient: Implemented RecordAllLinks/RecordLink methods
• DltEventsCollector: Reorganized to enable auto-reconnection
• DltGatewayClient: corrected host/port parameter retrieval
• DltEventDispatcher: implemented dispatcher to collect dlt events and trigger appropriate actions
• DltConnectorServiceServicerImpl: implemented RecordDevice/RecordLink/RecordSlice
• Updated Dockerfile
• Updated DLT test

PathComp - Frontend component:

• Defined default context ID for services requested to PathComp backend
• Defined logic to create plain paths workarounding multi-layer split when layers cannot be extrapolated
• Added missing devicetype-to-layer mappings
• Improved error handling
• Minor code improvements in _Algorithm interface
• Extended shortest path to manage single-device paths
• Implemented filtering of topology provided to backend when inter-domain path computation is required

Interdomain component:

• TopologyAbstractor: implemented topology abstractor logic
• Implemented new logic for managing interdomain slices
• Added missing dependencies
• Updated Dockerfile

Service component:

• Minor improvement in L2NMEmulated Config Rules

Slice component:

• Updated logic for managing local and interdomain slices
• Updated Dockerfile

WebUI component:

• Extended selection of Contexts to Contexts/Topologies
• Enabled selective topology plotting
• Enabled selective device listing
• Enabled selective link listing
• Improved labels in main page
• Improved display of related sub-services and sub-slices
• Defined unique cookie names per TeraFlowSDN instance to prevent cross-instance session data sharing

End-to-end tests NFV-SDN'22:

• Integrated demo into the mainstream code
• Added domain descriptor files
• Added inter-domain slice descriptor file
• Added multi-ingress support manifests and scripts
• Added helper deployment scripts