New features in Load Generator

Deploy Scripts:

• Added deployment of load generator's Grafana dashboard

Manifests:

• Added metrics port to load generator manifest
• Added service monitor for load generator

Protos:

• Extended load_generator.proto with availability, capacity and E2E latency constraints.
• Extended load_generator.proto with max_workers

Common - Method Wrappers:

• Added new meters in decorator for load generator

Load Generator component:

• Added customizable availability, capacity and E2E latency constraints
• Added customizable max_workers parameter
• Extended with metrics collection

WebUI component:

• Extended load generator tab with customizable availability, capacity and E2E latency constraints
• Extended load generator tab with customizable max_workers parameter
• Added Load Generator Grafana dashboard