feat(observability): added cluster_environment label

Refs: DevFW/infra-deploy#36

template/stacks/observability-client/vector/values.yaml

@@ -30,11 +30,9 @@ customConfig:
       source: |
         .log = parse_json(.message) ?? .message
         del(.message)
+        # Add the cluster environment to the log event
+        .cluster_environment = "{{{ .Env.CLUSTER_ENVIRONMENT }}}"
   sinks:
-    exporter:
-      type: prometheus_exporter
-      address: 0.0.0.0:9090
-      inputs: [internal_metrics]
     vlogs:
       type: elasticsearch
       inputs: [parser]
@@ -51,8 +49,9 @@ customConfig:
         enabled: false
       request:
         headers:
-          VL-Time-Field: timestamp
-          VL-Stream-Fields: stream,kubernetes.pod_name,kubernetes.container_name,kubernetes.pod_namespace
-          VL-Msg-Field: message,msg,_msg,log.msg,log.message,log
           AccountID: "0"
-          ProjectID: "0"
+          ProjectID: "0"
+      query:
+        _msg_field: _msg
+        _time_field: _time
+        _stream_fields: cluster_environment,kubernetes.container_name,kubernetes.namespace