FEAT(kube-state-metrics): add pod and container

- label relabeling for ...
Copy exported_pod and exported_container to pod and container labels
for Grafana dashboard query compatibility. This fixes CNPG dashboard
queries that filter by container and pod names.

kube-state-metrics/helm-values/kube-state-metrics.yaml

@@ -22,9 +22,17 @@ prometheus:
     relabelings:
       - targetLabel: cluster
         replacement: "mayne-cluster"
-    # exported_namespace를 namespace로 복사하여 모든 네임스페이스의 메트릭을 올바르게 표시
+    # exported_* 레이블을 표준 레이블로 복사하여 Grafana 대시보드 호환성 확보
     metricRelabelings:
       - sourceLabels: [exported_namespace]
         targetLabel: namespace
         regex: (.+)
         replacement: ${1}
+      - sourceLabels: [exported_pod]
+        targetLabel: pod
+        regex: (.+)
+        replacement: ${1}
+      - sourceLabels: [exported_container]
+        targetLabel: container
+        regex: (.+)
+        replacement: ${1}