Only check validity of certs in the chain of the node certificates

[willyborankin]

Description

This PR updates the certificate validation checks on bootup to limit validation to only the certificates within the chain of the node certificates. In 2.18.0 there was a change that validated all certificates contained in a bundle even if they were not part of the chain from the node certificates. Since those certs are not pertinent to OpenSearch, the validation does not need to occur.

Issues Resolved

[List any issues this PR will resolve]

Is this a backport? If so, please add backport PR # and/or commits #, and remove backport-failed label from the original PR.

Do these changes introduce new permission(s) to be displayed in the static dropdown on the front-end? If so, please open a draft PR in the security dashboards plugin and link the draft PR here

Testing

[Please provide details of testing done: unit testing, integration testing and manual testing]

Check List

• New functionality includes testing
• New functionality has been documented
• New Roles/Permissions have a corresponding security dashboards plugin PR
• API changes companion pull request created
• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov]

Codecov Report

Attention: Patch coverage is 62.26415% with 20 lines in your changes missing coverage. Please review.

Project coverage is 71.75%. Comparing base (7603dc2) to head (e6220e2).
Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
.../opensearch/security/ssl/config/KeyStoreUtils.java	46.87%	14 Missing and 3 partials ⚠️
.../org/opensearch/security/ssl/SslConfiguration.java	81.25%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5256      +/-   ##
==========================================
+ Coverage   71.69%   71.75%   +0.05%     
==========================================
  Files         335      335              
  Lines       22740    22777      +37     
  Branches     3597     3603       +6     
==========================================
+ Hits        16304    16344      +40     
+ Misses       4640     4638       -2     
+ Partials     1796     1795       -1     

Files with missing lines	Coverage Δ
...rch/security/ssl/config/KeyStoreConfiguration.java	66.66% <100.00%> (+1.87%)	⬆️
...h/security/ssl/config/TrustStoreConfiguration.java	63.15% <100.00%> (ø)
.../org/opensearch/security/ssl/SslConfiguration.java	77.19% <81.25%> (-1.66%)	⬇️
.../opensearch/security/ssl/config/KeyStoreUtils.java	53.09% <46.87%> (-3.23%)	⬇️

... and 7 files with indirect coverage changes

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