Extend Otel support for VirtualServer, VirtualServerRoute & Ingress

[pdabelf5]

• Allow users to turn on Otel support at the server/location level of the NGINX config
  • Allow users to turn on Otel support at the VirtualServer level
  • Allow users to turn on Otel support at the VirtualServerRoute level
  • Allow users to turn on Otel support at the Ingress level
• Allow users to configure a additional directives for the Otel Exporter (See ConfigMap example).
• Add pytests for full OTEL deployment

ConfigMap

apiVersion: v1
kind: ConfigMap
metadata:
  name: nginx-config
data:
  otel-exporter-endpoint: "[(http|https)://]host:port" # Done # Required
  otel-exporter-trusted-certificate: "path/to/certificate" # Phase2 Secret # Optional
  otel-exporter-header-name: "name" # Done # Optional
  otel-exporter-header-value: "value" # Done  # Optional
  otel-exporter-interval: "time" # Phase2 # Optional
  otel-exporter-batch-size: "number" # Phase2 # Optional
  otel-exporter-batch-count: "number" # Phase2 # Optional
  otel-service-name: "unknown_service:nginx" # Done  # Optional
  otel-resource-attr-name: "name" # Phase2 # Optional
  otel-resource-attr-value: "value" # Phase2 # Optional
  otel-trace-in-http: "false" # Done  # Optional

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