Add missing failure fields in opensearchapi structs

[Jakob3xD]

Description

Add missing failure fields in opensearchapi structs displayed by errors: https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:79 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:206 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:211 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:425 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:564 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:647 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:877 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:890 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:911 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:918 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:925 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:940 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:949 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:957 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:965 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:980 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:1197 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:1215 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:1237 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:1255 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:1466 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:1486 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:1497 https://github.com/opensearch-project/opensearch-go/actions/runs/8560050080/job/23458155375#step:7:1510

Issues Resolved

List any issues this PR will resolve, e.g. Closes [...].

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 63.24%. Comparing base (06a6dc8) to head (a1b6fd0). Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #510 +/- ## ========================================== + Coverage 57.29% 63.24% +5.94% ========================================== Files 315 315 Lines 9823 7715 -2108 ========================================== - Hits 5628 4879 -749 + Misses 2902 1550 -1352 + Partials 1293 1286 -7 ``` | [Flag](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project) | Coverage Δ | | |---|---|---| | [integration](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project) | `55.78% <ø> (+4.94%)` | :arrow_up: | | [unit](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project) | `81.45% <ø> (+68.60%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project) | Coverage Δ | | |---|---|---| | [opensearchapi/api\_bulk.go](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510?src=pr&el=tree&filepath=opensearchapi%2Fapi_bulk.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project#diff-b3BlbnNlYXJjaGFwaS9hcGlfYnVsay5nbw==) | `100.00% <ø> (ø)` | | | [opensearchapi/api\_cat-nodeattrs.go](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510?src=pr&el=tree&filepath=opensearchapi%2Fapi_cat-nodeattrs.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project#diff-b3BlbnNlYXJjaGFwaS9hcGlfY2F0LW5vZGVhdHRycy5nbw==) | `100.00% <ø> (ø)` | | | [opensearchapi/api\_cat-nodes.go](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510?src=pr&el=tree&filepath=opensearchapi%2Fapi_cat-nodes.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project#diff-b3BlbnNlYXJjaGFwaS9hcGlfY2F0LW5vZGVzLmdv) | `100.00% <ø> (ø)` | | | [opensearchapi/api\_cluster-stats.go](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510?src=pr&el=tree&filepath=opensearchapi%2Fapi_cluster-stats.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project#diff-b3BlbnNlYXJjaGFwaS9hcGlfY2x1c3Rlci1zdGF0cy5nbw==) | `100.00% <ø> (ø)` | | | [opensearchapi/api\_datastream-stats.go](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510?src=pr&el=tree&filepath=opensearchapi%2Fapi_datastream-stats.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project#diff-b3BlbnNlYXJjaGFwaS9hcGlfZGF0YXN0cmVhbS1zdGF0cy5nbw==) | `100.00% <ø> (ø)` | | | [...archapi/api\_document-delete\_by\_query\_rethrottle.go](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510?src=pr&el=tree&filepath=opensearchapi%2Fapi_document-delete_by_query_rethrottle.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project#diff-b3BlbnNlYXJjaGFwaS9hcGlfZG9jdW1lbnQtZGVsZXRlX2J5X3F1ZXJ5X3JldGhyb3R0bGUuZ28=) | `100.00% <ø> (ø)` | | | [opensearchapi/api\_indices-block.go](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510?src=pr&el=tree&filepath=opensearchapi%2Fapi_indices-block.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project#diff-b3BlbnNlYXJjaGFwaS9hcGlfaW5kaWNlcy1ibG9jay5nbw==) | `100.00% <ø> (ø)` | | | [opensearchapi/api\_indices-cache.go](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510?src=pr&el=tree&filepath=opensearchapi%2Fapi_indices-cache.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project#diff-b3BlbnNlYXJjaGFwaS9hcGlfaW5kaWNlcy1jYWNoZS5nbw==) | `100.00% <ø> (ø)` | | | [opensearchapi/api\_indices-close.go](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510?src=pr&el=tree&filepath=opensearchapi%2Fapi_indices-close.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project#diff-b3BlbnNlYXJjaGFwaS9hcGlfaW5kaWNlcy1jbG9zZS5nbw==) | `100.00% <ø> (ø)` | | | [opensearchapi/api\_indices-flush.go](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510?src=pr&el=tree&filepath=opensearchapi%2Fapi_indices-flush.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project#diff-b3BlbnNlYXJjaGFwaS9hcGlfaW5kaWNlcy1mbHVzaC5nbw==) | `100.00% <ø> (ø)` | | | ... and [14 more](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project) | | ... and [229 files with indirect coverage changes](https://app.codecov.io/gh/opensearch-project/opensearch-go/pull/510/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project)

[Jakob3xD]

I am not sure how I can setup a broken Opensearch to test this in a practical way.