Using legacy Log Forwarding is not sending logs to the internal Elasticsearch in RHOCP 4.4 and later

Issue

• Forwarding logs to external log aggregator using fluentd-forward as per documentation protocol stops sending logs to the internal elasticsearch.
• Forwarding logs to external syslog server using syslog protocol as per documentation stops sending logs to the internal elasticsearch.
• The fluentd configuration in RHOCP 4.5 generated after configuring the secure-forward is las mentioned below:

$ oc rsh <fluentd pod> cat /etc/fluent/fluent.conf
//Output-Emiited//
<label @_LOGS_APP>
  <match **>
    @type copy


    <store>
      @type relabel
      @label @_LEGACY_SECUREFORWARD
    </store>

  </match>
</label>
<label @_LOGS_AUDIT>
  <match **>
    @type copy


    <store>
      @type relabel
      @label @_LEGACY_SECUREFORWARD
    </store>

  </match>
</label>
<label @_LOGS_INFRA>
  <match **>
    @type copy


    <store>
      @type relabel
      @label @_LEGACY_SECUREFORWARD
    </store>

  </match>
</label>
//Output-Emiited//