Use out_secondary_file for secondary output

[daipom]

To solve the warning message:

Use different plugin for secondary ...

[daipom]

This will change the output path as follows:

• before: /var/log/td-agent/failed_records_0.log
• after: /var/log/td-agent/failed_records/dump.bin.0

If this change is unacceptable, then we should not make this change.

[daipom]

This will change the output path as follows:

* before: `/var/log/td-agent/failed_records_0.log`

* after: `/var/log/td-agent/failed_records/dump.bin.0`

If this change is unacceptable, then we should not make this change.

Note: out_secondary_file can't output the files with the same format as out_file. Even if we use basename as follows, the path will be like /var/log/td-agent/failed_records.0.

    <secondary>
      @type secondary_file
      directory /var/log/td-agent
      basename failed_records
    </secondary>

[daipom]

Oh, sorry. We need to fix it too. Thanks for your review. I will fix it and confirm the behavior on each platform.

[daipom]

• Waiting #525

[daipom]

• Rebased to the latest master to include #525

[daipom]

Sorry, I forgot to point out a thing. Could you modify also fluent-package/templates/opt/fluent/share/td-agent.conf.tmpl?

By #525, we don't need to manage td-agent.conf.tmpl anymore. I will check the package default behavior in some platforms after the CI completed

[daipom]

Rebased to solve conflicts.

[daipom]

I confirmed the actual logs of msi and rpm. In addition, I added the tests for each platform to confirm the log files.

[ashie]

Thanks!

[daipom]

Thanks for your review!