Merge getUsedSegmentsForInterval and getUsedSegmentAndCreatedDateForInterval into one method

[zhangxinyu1]

see #5556

[zhangxinyu1]

Hi @gianm,
I want to merge the method getUsedSegmentsForInterval() and getUsedSegmentAndCreatedDateForInterval() of IndexerMetadataStorageCoordinator.java into one method. There is only one difference between them: The former does not include information of created_date, but the latter does. I don't know why created_date is not a part of DataSchema. Could we make DataSchema include created_date?

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[stale]

This issue has been marked as stale due to 280 days of inactivity. It will be closed in 4 weeks if no further activity occurs. If this issue is still relevant, please simply write any comment. Even if closed, you can still revive the issue at any time or discuss it on the [email protected] list. Thank you for your contributions.

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