DateHistogramValuesSourceBuilder - offset support

[muzehyun]

Is your feature request related to a problem? Please describe.
Can't specify "offset" parameter for date_histogram with OpenSearch java client.
Current offset parameter is used differently (rounding).

Describe the solution you'd like
A way to specify offset.

Describe alternatives you've considered
Replace current offset function usage or create new. - "dateHistogramOffset()"

Additional context
Add any other context or screenshots about the feature request here.

In request json body, no way to set "offset" with java client.

{
    "date_histogram":
    {
        "field": "timestamp",
        "calendar_interval": "1w",
        "offset": "-1d",
    }
}

[sohami]

@muzehyun This looks to be java client related functionality gap. Can you create the issue in this repo please ?

[muzehyun]

I'm still using "rest-high-level" client here in this repo. No major update on rest-high-level-client? Should I move to new Java client?

[dblock]

@muzehyun Yes you should. Moving this issue into opensearch-java.

[dblock]

@muzehyun Want to try to use the latest version of the client? Does it work?