Add the actual Object metadata when add_object_metadata is enabled

[hlx98007]

Fix issue #290

[ganmacs]

Could you check CI? https://travis-ci.org/fluent/fluent-plugin-s3/builds/593195134?utm_source=github_status&utm_medium=notification

[hlx98007]

@ganmacs Could you guide me on how to resolve this one? I am not too familiar with Ruby and how the CI was setup.

Since the CI test is mocking the data responses and there is no object metadata put initially in the test, I am not sure how to work on the CI part.

[repeatedly]

BTW, need new parameter because changing generated record may break existing user pipeline.

[hlx98007]

@repeatedly If that's the case, I will close the PR because I think this need further discussion.

[sppwf]

Hi Guys,

Is there any work done over here?

Thanks
Sergiu Plotnicu