Add missing SeqNo and PrimaryTerm fields in SearchHit

[emtammaru]

Description

Adds the missing fields SeqNo and PrimaryTerm to the SearchHit struct. These fields are optionally returned in the response as documented here with the seq_no_primary_term param: https://opensearch.org/docs/latest/api-reference/search/

Issues Resolved

N/A

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.96%. Comparing base (06a6dc8) to head (a907e9d).
Report is 40 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #574       +/-   ##
===========================================
+ Coverage   57.29%   67.96%   +10.67%     
===========================================
  Files         315      376       +61     
  Lines        9823     8853      -970     
===========================================
+ Hits         5628     6017      +389     
+ Misses       2902     1555     -1347     
+ Partials     1293     1281       -12     

Flag	Coverage Δ
integration	60.41% <ø> (+9.57%)	⬆️
unit	15.28% <ø> (+2.43%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
opensearchapi/api_search.go	100.00% <ø> (ø)

... and 272 files with indirect coverage changes

[dblock]

Thanks! This needs a rebase.

The proposal in #284 might be of interest. Also appreciate if you could take this opportunity to check https://github.com/opensearch-project/opensearch-api-specification for these fields and maybe add a test there.

[emtammaru]

Thanks! This needs a rebase.

The proposal in #284 might be of interest. Also appreciate if you could take this opportunity to check https://github.com/opensearch-project/opensearch-api-specification for these fields and maybe add a test there.

Thank you, I checked the spec and I see the fields under response for https://opensearch-project.github.io/opensearch-api-specification/#/default/search.0. Could you point me to where I could add a test for it in https://github.com/opensearch-project/opensearch-api-specification?

[dblock]

I think https://github.com/opensearch-project/opensearch-api-specification/blob/73d552477f8f006f5ff49f451494d150b8378b18/tests/_core/search.yaml would be a logical place. As long as these are mentioned somewhere.