docs: update README.md to reflect opentelemetry-kube-stack migration

- Replace opentelemetry-operator references with opentelemetry-kube-stack
- Update service description to emphasize complete observability stack
- Remove deprecated opentelemetry-operator service files
- Enhance feature descriptions with Prometheus and Jaeger integration

Author: devx

README.md

@@ -29,7 +29,7 @@ applications/
 | **kube-prometheus-stack** | Core Service | `observability` | Complete monitoring and alerting stack |
 | **metallb** | Core Service | `metallb-system` | Bare metal load balancer |
 | **olm** | Core Service | `olm` | Operator Lifecycle Manager |
-| **opentelemetry-operator** | Core Service | `observability` | OpenTelemetry operator for auto-instrumentation |
+| **opentelemetry-kube-stack** | Core Service | `observability` | Complete OpenTelemetry observability stack |
 | **sealed-secrets** | Core Service | `sealed-secrets` | Encrypted secrets management |
 | **velero** | Core Service | `velero` | Cluster backup and disaster recovery |
 | **alert-proxy** | Managed Service | `rackspace` | Rackspace alert aggregation |
@@ -104,16 +104,17 @@ applications/
   - Dependency resolution
   - Automatic updates
 
-#### **opentelemetry-operator**
-- **Purpose**: OpenTelemetry operator for auto-instrumentation and collector management
-- **Source**: OpenTelemetry Helm repository (`https://open-telemetry.github.io/opentelemetry-helm-charts`)
+#### **opentelemetry-kube-stack**
+- **Purpose**: Complete OpenTelemetry observability stack for Kubernetes
+- **Source**: OpenTelemetry Kube Stack Helm repository (`https://charts.opentelemetry.io`)
 - **Namespace**: `observability`
 - **Features**:
-  - Automatic OpenTelemetry instrumentation injection
-  - OpenTelemetry Collector deployment and management
-  - Custom resource definitions for OpenTelemetry configuration
-  - Webhook-based sidecar injection
+  - OpenTelemetry Operator for auto-instrumentation and collector management
+  - Pre-configured OpenTelemetry Collector for metrics, traces, and logs
+  - Automatic service discovery and monitoring
   - Multi-language auto-instrumentation support (Java, Node.js, Python, .NET, Go)
+  - Integration with Prometheus and Jaeger for complete observability
+  - Custom resource definitions for OpenTelemetry configuration
 
 #### **sealed-secrets**
 - **Purpose**: Encrypted secrets management