Security plugin support

[florianvazelle]

Description

Added support for the Security API.

Issues Resolved

The issue of managing roles, users... from the python client.
This issue is the subject of a feature request at #110.

[codecov]

Codecov Report

Merging #399 (87471d0) into main (db972e6) will increase coverage by 0.05%.
The diff coverage is 51.61%.

@@            Coverage Diff             @@
##             main     #399      +/-   ##
==========================================
+ Coverage   70.89%   70.94%   +0.05%     
==========================================
  Files          77       79       +2     
  Lines        7171     7576     +405     
==========================================
+ Hits         5084     5375     +291     
- Misses       2087     2201     +114     

Impacted Files	Coverage Δ
opensearchpy/_async/plugins/security.py	51.08% <51.08%> (ø)
opensearchpy/plugins/security.py	51.08% <51.08%> (ø)
opensearchpy/_async/client/plugins.py	93.75% <100.00%> (+0.89%)	⬆️
opensearchpy/client/plugins.py	93.75% <100.00%> (+0.89%)	⬆️

... and 25 files with indirect coverage changes

[dblock]

Looks good!

Can we add something to https://github.com/opensearch-project/opensearch-py/blob/main/USER_GUIDE.md#using-plugins as part of this PR?

[florianvazelle]

I pushed some new commits to fix my tests that never passed, because I hadn't quite understood the test suite, which isn't very clear. I added the tests in an async version.

Yes, I can add something to the USER_GUIDE, but the security API has a lot of enpoints, if I add examples for users and roles, is that enough?

[dblock]

Looks great! Split out security plugin tests in its own file(s). Otherwise I think this is good enough.

[saimedhi]

Hello @florianvazelle, can you please move Security Client from plugins to clients. example: (opensearchpy/client/security.py) like in PR #439. All the security features are considered as part of core features of OS. So, kindly let me know if you are willing to make the following changes. This is crucial and had to be done before next release. Thanks for your contributions.