Description of problem:
Creating clusterlogging instance with retentinPolicy, only set policy for the app logs, then check the indices in ES, only app index is created, no infra index.

$ oc exec elasticsearch-cdm-u8shd2o6-1-5c698f8465-7jr46 -- indices
Defaulting container name to elasticsearch.
Use 'oc describe pod/elasticsearch-cdm-u8shd2o6-1-5c698f8465-7jr46 -n openshift-logging' to see all of the containers in this pod.
Wed Jun 10 01:54:23 UTC 2020
health status index      uuid                   pri rep docs.count docs.deleted store.size pri.store.size
green  open   app-000001 tb5N9_-CTr-weMvOsEK6qw   3   1        155            0          0              0
green  open   .security  bGeheP90To6OUb1NoE8IWw   1   1          5            0          0              0
green  open   .kibana_1  HNk4d36hQxOesj77H4rX-g   1   1          0            0          0              0

$ oc get cj
NAME                         SCHEDULE       SUSPEND   ACTIVE   LAST SCHEDULE   AGE
elasticsearch-delete-app     */15 * * * *   False     0        3m1s            3m18s
elasticsearch-rollover-app   */15 * * * *   False     0        3m1s            3m18s


Clusterlogging:
    name: instance
    namespace: openshift-logging
    resourceVersion: "52606"
    selfLink: /apis/logging.openshift.io/v1/namespaces/openshift-logging/clusterloggings/instance
    uid: 4a917f0c-ffe9-4246-979f-52ea62418c0d
  spec:
    collection:
      logs:
        fluentd: {}
        type: fluentd
    logStore:
      elasticsearch:
        nodeCount: 3
        redundancyPolicy: SingleRedundancy
        resources:
          requests:
            memory: 2Gi
        storage:
          size: 20Gi
          storageClassName: standard
      retentionPolicy:
        application:
          maxAge: 1w
      type: elasticsearch
    managementState: Managed
    visualization:
      kibana:
        replicas: 1
        resources:
          limits:
            cpu: 1000m
            memory: 4Gi
          requests:
            cpu: 800m
            memory: 2Gi
      type: kibana
  status:
    collection:
      logs:
        fluentdStatus:
          daemonSet: fluentd
          nodes:
            fluentd-7z7x9: qitang-d54rw-worker-c-8qc5s.c.openshift-qe.internal
            fluentd-9jqnz: qitang-d54rw-master-2.c.openshift-qe.internal
            fluentd-22qlf: qitang-d54rw-worker-a-r9rjh.c.openshift-qe.internal
            fluentd-fhwj8: qitang-d54rw-master-1.c.openshift-qe.internal
            fluentd-mwqrx: qitang-d54rw-master-0.c.openshift-qe.internal
            fluentd-wzgbb: qitang-d54rw-worker-b-7x6f9.c.openshift-qe.internal
          pods:
            failed: []
            notReady: []
            ready:
            - fluentd-22qlf
            - fluentd-7z7x9
            - fluentd-9jqnz
            - fluentd-fhwj8
            - fluentd-mwqrx
            - fluentd-wzgbb
    curation: {}
    logStore:
      elasticsearchStatus:
      - cluster:
          activePrimaryShards: 5
          activeShards: 10
          initializingShards: 0
          numDataNodes: 3
          numNodes: 3
          pendingTasks: 0
          relocatingShards: 0
          status: green
          unassignedShards: 0
        clusterName: elasticsearch
        nodeConditions:
          elasticsearch-cdm-u8shd2o6-1: []
          elasticsearch-cdm-u8shd2o6-2: []
          elasticsearch-cdm-u8shd2o6-3: []
        nodeCount: 3
        pods:
          client:
            failed: []
            notReady: []
            ready:
            - elasticsearch-cdm-u8shd2o6-1-5c698f8465-7jr46
            - elasticsearch-cdm-u8shd2o6-2-74948b64d4-vml8p
            - elasticsearch-cdm-u8shd2o6-3-dd5df9bf9-vspl9
          data:
            failed: []
            notReady: []
            ready:
            - elasticsearch-cdm-u8shd2o6-1-5c698f8465-7jr46
            - elasticsearch-cdm-u8shd2o6-2-74948b64d4-vml8p
            - elasticsearch-cdm-u8shd2o6-3-dd5df9bf9-vspl9
          master:
            failed: []
            notReady: []
            ready:
            - elasticsearch-cdm-u8shd2o6-1-5c698f8465-7jr46
            - elasticsearch-cdm-u8shd2o6-2-74948b64d4-vml8p
            - elasticsearch-cdm-u8shd2o6-3-dd5df9bf9-vspl9
        shardAllocationEnabled: all
    visualization:
      kibanaStatus:
      - deployment: kibana
        pods:
          failed: []
          notReady: []
          ready:
          - kibana-6f9f964c56-dm5kl
        replicaSets:
        - kibana-6f9f964c56
        replicas: 1

Elasticsearch:
  spec:
    indexManagement:
      mappings:
      - aliases:
        - app
        - logs.app
        name: app
        policyRef: app-policy
      policies:
      - name: app-policy
        phases:
          delete:
            minAge: 1w
          hot:
            actions:
              rollover:
                maxAge: 1h
        pollInterval: 15m
    managementState: Managed
    nodeSpec:
      resources:
        requests:
          memory: 2Gi
    nodes:
    - genUUID: u8shd2o6
      nodeCount: 3
      resources: {}
      roles:
      - client
      - data
      - master
      storage:
        size: 20Gi
        storageClassName: standard
    redundancyPolicy: SingleRedundancy
  status:
    cluster:
      activePrimaryShards: 5
      activeShards: 10
      initializingShards: 0
      numDataNodes: 3
      numNodes: 3
      pendingTasks: 0
      relocatingShards: 0
      status: green
      unassignedShards: 0
    clusterHealth: ""
    conditions: []
    nodes:
    - deploymentName: elasticsearch-cdm-u8shd2o6-1
      upgradeStatus: {}
    - deploymentName: elasticsearch-cdm-u8shd2o6-2
      upgradeStatus: {}
    - deploymentName: elasticsearch-cdm-u8shd2o6-3
      upgradeStatus: {}
    pods:
      client:
        failed: []
        notReady: []
        ready:
        - elasticsearch-cdm-u8shd2o6-1-5c698f8465-7jr46
        - elasticsearch-cdm-u8shd2o6-2-74948b64d4-vml8p
        - elasticsearch-cdm-u8shd2o6-3-dd5df9bf9-vspl9
      data:
        failed: []
        notReady: []
        ready:
        - elasticsearch-cdm-u8shd2o6-1-5c698f8465-7jr46
        - elasticsearch-cdm-u8shd2o6-2-74948b64d4-vml8p
        - elasticsearch-cdm-u8shd2o6-3-dd5df9bf9-vspl9
      master:
        failed: []
        notReady: []
        ready:
        - elasticsearch-cdm-u8shd2o6-1-5c698f8465-7jr46
        - elasticsearch-cdm-u8shd2o6-2-74948b64d4-vml8p
        - elasticsearch-cdm-u8shd2o6-3-dd5df9bf9-vspl9
    shardAllocationEnabled: all

Version-Release number of selected component (if applicable):
clusterlogging.4.5.0-202006090812           Cluster Logging          4.5.0-202006090812              Succeeded
elasticsearch-operator.4.5.0-202006091957   Elasticsearch Operator   4.5.0-202006091957              Succeeded

How reproducible:
Always

Steps to Reproduce:
1. create clusterlogging instance with:
apiVersion: "logging.openshift.io/v1"
kind: "ClusterLogging"
metadata:
  name: "instance"
  namespace: "openshift-logging"
spec:
  managementState: "Managed"
  logStore:
    type: "elasticsearch"
    retentionPolicy: 
      application:
        maxAge: 1w
    elasticsearch:
      nodeCount: 3
      redundancyPolicy: "SingleRedundancy"
      resources:
        requests:
          memory: "2Gi"
      storage:
        storageClassName: "standard"
        size: "20Gi"
  visualization:
    type: "kibana"
    kibana:
      resources:
        limits:
          cpu: "1000m"
          memory: "4Gi"
        requests:
          cpu: "800m"
          memory: "2Gi"
      replicas: 1
  collection:
    logs:
      type: "fluentd"
      fluentd: {}
2. wait until the EFK pods are running, check indices in the ES pod
3.

Actual results:


Expected results:


Additional info:
After removing the retentionPolicy in the clusterlogging instance, the infra logs could be collected.