Drop kubernetes metadata

[Nurlan199206]

i'm trying drop some unneccesary fields, but i still see metadata

i follow this docs: Drop fields from events | Filebeat Reference [7.11] | Elastic

"ecs": {
      "version": "1.1.0"
    },
    "host": {
      "name": "prod-node02",
      "hostname": "prod-node02",
      "architecture": "x86_64",
      "os": {
        "kernel": "3.10.0-1160.11.1.el7.x86_64",
        "codename": "Core",
        "platform": "centos",
        "version": "7 (Core)",
        "family": "redhat",
        "name": "CentOS Linux"
      },
      "containerized": true
    },







   - type: container
      paths:
        - /var/log/containers/*.log
      exclude_files:
        - /var/log/containers/admin.*
      processors:
        - add_kubernetes_metadata:
            host: ${NODE_NAME}
            matchers:
            - logs_path:
                logs_path: "/var/log/containers/"
        - drop_fields:
            fields: ["agent", "log", "input", "host", "ecs"]        
        - drop_event.when:
           or:
           - equals:
               kubernetes.namespace: "kube-system"
           - equals:
               kubernetes.namespace: "openshift-console"
           - equals:
               kubernetes.namespace: "openshift-logging"
           - equals:
               kubernetes.namespace: "openshift-metric-server"
           - equals:
               kubernetes.namespace: "openshift-node"
           - equals:
               kubernetes.namespace: "openshift-web-console"
           - equals:
               kubernetes.namespace: "kube-public"
           - equals:
               kubernetes.namespace: "kube-service-catalog"
           - equals:
               kubernetes.namespace: "openshift-infra"
           - equals:
               kubernetes.namespace: "openshift-monitoring"
           - equals:
               kubernetes.namespace: "openshift-sdn"
           - equals:
               kubernetes.namespace: "default"
           - equals:
               kubernetes.namespace: "velero"
           - equals:
               kubernetes.namespace: "openshift-template-service-broker"
           - equals:
               kubernetes.namespace: "openshift-metrics-server"