#351 - Add support for ML-Common's stats API

[rawwar]

Description

Adds support for Stats API

Issues Resolved

closes #351

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff

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[codecov]

Codecov Report

Attention: Patch coverage is 18.18182% with 18 lines in your changes are missing coverage. Please review.

Project coverage is 90.12%. Comparing base (529ee34) to head (0f2c58b).
Report is 1 commits behind head on main.

❗ Current head 0f2c58b differs from pull request most recent head 085c008. Consider uploading reports for the commit 085c008 to get more accurate results

Files	Patch %	Lines
opensearch_py_ml/ml_commons/ml_commons_client.py	18.18%	9 Missing ⚠️
opensearch_py_ml/ml_commons/validators/stats.py	18.18%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #354      +/-   ##
==========================================
- Coverage   91.53%   90.12%   -1.41%     
==========================================
  Files          42       43       +1     
  Lines        4395     4417      +22     
==========================================
- Hits         4023     3981      -42     
- Misses        372      436      +64     

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[rawwar]

@dhrubo-os , it seems like Stats API doesn't work for 2.7.0 . Its been failing with the following error message

`raw_data = '{"error":{"root_cause":[{"type":"illegal_argument_exception","reason":"Wrong ML cluster level stat"}],"type":"illegal_argument_exception","reason":"Wrong ML cluster level stat"},"status":400}

`

But, its working fine for 2.11.0. Hence, I skipped the stats test for 2.7.0. Is this ok?

[rawwar]

@dhrubo-os , were you able to find examples for the request body that can be sent to stats api?

[dhrubo-os]

Add test?

Integration test failing.

[rawwar]

Add test?

Integration test failing.

updated it

[dhrubo-os]

Can you also please update the issue description with more details like which examples your tried so far to do the functional test?

[dhrubo-os]

Could you please resolve the conflict?