switch to ml_configuration in agent response as backend changed

[qianheng-aws]

Description

The backend ml-commons changed its configuration field from configuration to ml_configuration and lead to error.

GET /_plugins/_ml/config/os_chat

{
  "config_type": "os_chat_root_agent",
  "ml_configuration": {
    "agent_id": "******************"
  }
}

Related change in ml-commons: https://github.com/opensearch-project/ml-commons/pull/2710

Issues Resolved

Check List

• [ ] New functionality includes testing.
  • [ ] All tests pass, including unit test, integration test.
• [ ] New functionality has user manual doc added.
• [ ] Commits are signed per the DCO using --signoff.

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[wanglam]

Is this change target for 2.16?

[qianheng-aws]

Is this change target for 2.16?

The ml-commons related change https://github.com/opensearch-project/dashboards-assistant/pull/239#issuecomment-2247335910 has backported to 2.16, so I think this change should target for 2.16 as well

[raintygao]

It would be better to add your change in https://github.com/opensearch-project/dashboards-assistant/blob/main/release-notes/dashboards-assistant.release-notes-2.16.0.0.md as this should be released in 2.16.

[qianheng-aws]

It would be better to add your change in https://github.com/opensearch-project/dashboards-assistant/blob/main/release-notes/dashboards-assistant.release-notes-2.16.0.0.md as this should be released in 2.16.

@raintygao But it cannot be called a feature nor bug fix. Maybe Maintenance?

[raintygao]

It would be better to add your change in https://github.com/opensearch-project/dashboards-assistant/blob/main/release-notes/dashboards-assistant.release-notes-2.16.0.0.md as this should be released in 2.16.

@raintygao But it cannot be called a feature nor bug fix. Maybe Maintenance?

Im okay to this.