Automatic merge from submit-queue (batch tested with PRs 67067, 67947). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

fixes fluentd configuration params in fluentd-elasticsearch addon

**What this PR does / why we need it**:
- fixes the errors/warnings in fluentd configuration.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
```
2018-08-28 11:40:50 +0000 [warn]: 'filters' parameter is deprecated: filters has been renamed as matches
2018-08-28 11:40:50 +0000 [warn]: 'filters' parameter is deprecated: filters has been renamed as matches
2018-08-28 11:40:50 +0000 [warn]: 'filters' parameter is deprecated: filters has been renamed as matches
2018-08-28 11:40:50 +0000 [warn]: 'filters' parameter is deprecated: filters has been renamed as matches
2018-08-28 11:40:50 +0000 [warn]: 'filters' parameter is deprecated: filters has been renamed as matches
2018-08-28 11:40:50 +0000 [warn]: parameter 'time_format' in <source>
  @id fluentd-containers.log
  @type tail
  path "/var/log/containers/*.log"
  pos_file "/var/log/es-containers.log.pos"
  time_format %Y-%m-%dT%H:%M:%S.%NZ
  tag "raw.kubernetes.*"
  read_from_head true
  <parse>
    @type "multi_format"
    <pattern>
      format json
      time_key "time"
      time_format "%Y-%m-%dT%H:%M:%S.%NZ"
      time_type string
    </pattern>
    <pattern>
      format /^(?<time>.+) (?<stream>stdout|stderr) [^ ]* (?<log>.*)$/
      time_format "%Y-%m-%dT%H:%M:%S.%N%:z"
      expression ^(?<time>.+) (?<stream>stdout|stderr) [^ ]* (?<log>.*)$
      ignorecase false
      multiline false
    </pattern>
  </parse>
</source> is not used.
```

**Release note**:

```release-note
fixes the errors/warnings in fluentd configuration
```