feat: add tracing configuration to local-setup

[crstrn13]

Problem

Currently, make local-setup does not configure distributed tracing for the local Kuadrant environment:

• Jaeger is deployed (via tools namespace) but not configured in Kuadrant CR
• Kuadrant operator does not have OTEL environment variables for control plane tracing
• Control plane tracing tests skip locally due to missing OTEL configuration
• Data plane tracing is not enabled in Kuadrant CR
• Developers cannot debug reconciliation or request flows using traces

Current State

✅ Jaeger is already deployed (tools namespace)
❌ Kuadrant CR does not have data plane tracing configured
❌ Kuadrant operator does not have control plane OTEL env vars

Proposed Solution

1. Configure Kuadrant Operator OTEL (Control Plane Tracing)

Add OTEL environment variables to kuadrant-operator-controller-manager deployment:

env:
  - name: OTEL_EXPORTER_OTLP_ENDPOINT
    value: "http://jaeger-collector.<namespace>:4318"
  - name: OTEL_SERVICE_NAME
    value: "kuadrant-operator"
  - name: OTEL_TRACES_EXPORTER
    value: "otlp"
  - name: OTEL_EXPORTER_OTLP_PROTOCOL
    value: "http/protobuf"

2. Configure Kuadrant CR Data Plane Tracing

Update Kuadrant CR with tracing configuration:

apiVersion: kuadrant.io/v1beta1
kind: Kuadrant
metadata:
  name: kuadrant
spec:
  observability:
    tracing:
      defaultEndpoint: "jaeger-collector.<namespace>.svc.cluster.local:4318"
    dataPlane:
      defaultLevels:
        - debug: true

Benefits

• ✅ Enables running full control plane tracing test suite locally
• ✅ Enables data plane tracing tests locally
• ✅ Developers can debug reconciliation issues with distributed traces
• ✅ Developers can trace request flows through the entire stack
• ✅ Local environment matches production tracing setup

Acceptance Criteria

• Kuadrant operator has OTEL environment variables configured
• Kuadrant CR includes observability.tracing configuration with Jaeger endpoint
• Control plane tracing tests pass locally (not skipped)
• Data plane tracing tests pass locally
• Tracing tests pass on local-setup: make testsuite/tests/singlecluster/tracing/
• Documentation updated with tracing setup instructions

Related

• Control plane tracing tests: testsuite/tests/singlecluster/tracing/control_plane/
• Data plane tracing tests: testsuite/tests/singlecluster/tracing/data_plane_tracing/
• Issue Control Plane Tracing #866 - Control Plane Tracing implementation

Technical Notes

The require_tracing_enabled fixture in testsuite/tests/singlecluster/tracing/control_plane/conftest.py checks for OTEL environment variables on the operator deployment. Currently skips tests if not configured.