Description of problem:
Couldn't view fluentd pod logs when LOGGING_FILE_PATH=console.
# oc get pod
NAME                                        READY     STATUS    RESTARTS   AGE
cluster-logging-operator-7dd7c56766-mz99w   1/1       Running   0          4h
elasticsearch-clientmaster-0-1-0            1/1       Running   0          2h
elasticsearch-data-1-1-789c6d9944-w86th     1/1       Running   0          2h
elasticsearch-data-1-2-784ccf7869-25z5w     1/1       Running   0          3h
fluentd-77vwt                               1/1       Running   0          1h
fluentd-mb7xw                               1/1       Running   0          1h
fluentd-mtmj6                               1/1       Running   0          2h
fluentd-xtsv5                               1/1       Running   0          1h
kibana-747f7bc8c-wcp66                      2/2       Running   0          4h

# oc exec fluentd-mtmj6  env |grep LOGGING_FILE
LOGGING_FILE_PATH=console
LOGGING_FILE_AGE=10
LOGGING_FILE_SIZE=1024000

# oc logs fluentd-mtmj6
=============================
Fluentd logs have been redirected to: console
If you want to print out the logs, use command:
oc exec <pod_name> -- logs
=============================

execute `oc exec fluentd-mtmj6 -- logs`, the output contains some scripts:

# oc exec fluentd-mtmj6 -- logs
#!/bin/bash

export MERGE_JSON_LOG=${MERGE_JSON_LOG:-true}
CFG_DIR=/etc/fluent/configs.d
ENABLE_PROMETHEUS_ENDPOINT=${ENABLE_PROMETHEUS_ENDPOINT:-"true"}
OCP_OPERATIONS_PROJECTS=${OCP_OPERATIONS_PROJECTS:-"default openshift openshift- kube-"}
OCP_FLUENTD_TAGS=""
for p in ${OCP_OPERATIONS_PROJECTS}; do
    if [[ "${p}" == *- ]] ; then
      p="${p}*"
    fi
    OCP_FLUENTD_TAGS+=" **_${p}_**"
done
ocp_fluentd_files=$( grep -l %OCP_FLUENTD_TAGS% ${CFG_DIR}/* ${CFG_DIR}/*/* 2> /dev/null || : )
for file in ${ocp_fluentd_files} ; do
    sed -i -e "s/%OCP_FLUENTD_TAGS%/${OCP_FLUENTD_TAGS}/" $file
done

echo "============================="
echo "Fluentd logs have been redirected to: $LOGGING_FILE_PATH"
echo "If you want to print out the logs, use command:"
echo "oc exec <pod_name> -- logs"
echo "============================="

......

def create_default_file()
  file_name = "/etc/fluent/configs.d/dynamic/output-remote-syslog.conf"
  c = '## This file was generated by generate-syslog-config.rb'

  # NOTE WELL: you cannot add an @id to this plugin easily like
  # @id remote-syslog-input
  # this gives an error with fluentd 1.x because the generated file is
  # included from two separate places (if ops logging is enabled), and
  # therefore there are two completely different plugin configs each
  # with the same id
  # We'll have to generate two completely separate files each with a
  # unique id e.g. remote-syslog-input-apps or -infra
  @env_vars.each do |r|
  c <<
"
<store>
@type syslog_buffered
"
     r.each { |v|  c << "#{v[1]} #{v[2]}\n" unless !v[2] }
  c <<
"</store>
"
  end

  File.open(file_name, 'w') { |f| f.write(c) }
end

init_environment_vars()
create_default_file()
2018-11-20 22:34:44 -0500 [warn]: [elasticsearch-apps] Could not push logs to Elasticsearch, resetting connection and trying again. Connection reset by peer (Errno::ECONNRESET)


Version-Release number of selected component (if applicable):
ose-logging-fluentd-v4.0.0-0.63.0.0

How reproducible:
Always

Steps to Reproduce:
1. deploy EFK stack follow https://github.com/openshift/cluster-logging-operator#full-deploy
2. execute 'oc set ds/fluentd LOGGING_FILE_PATH=console'
3. wait until all the fluentd pods become running, check fluentd pod log

Actual results:
No fluentd pod logs shows when LOGGING_FILE_PATH=console

Expected results:
execute `oc logs $fluentd-pod` should show the fluentd pod log when 'LOGGING_FILE_PATH=console'

Additional info: