Remove OpenSSL provider

[cwperks]

Description

Support for configuring OpenSSL as a TLS provider was not supported when running with JDK > 11. Since 3.0.0 has minimum compatibility with JDK 21 its no longer possible to configure the OpenSSL provider. I am raising this PR to remove the code around configuring the OpenSSL provider.

• Category (Enhancement, New feature, Bug fix, Test fix, Refactoring, Maintenance, Documentation)

Maintenance

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 46.66667% with 8 lines in your changes missing coverage. Please review.

Project coverage is 71.96%. Comparing base (6688955) to head (5ebaa42).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
...ensearch/security/ssl/DefaultSecurityKeyStore.java	25.00%	2 Missing and 4 partials ⚠️
.../opensearch/security/ssl/config/SslParameters.java	71.42%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5220      +/-   ##
==========================================
+ Coverage   71.71%   71.96%   +0.24%     
==========================================
  Files         337      337              
  Lines       22793    22661     -132     
  Branches     3607     3564      -43     
==========================================
- Hits        16347    16307      -40     
+ Misses       4649     4585      -64     
+ Partials     1797     1769      -28     

Files with missing lines	Coverage Δ
...arch/security/ssl/OpenSearchSecuritySSLPlugin.java	87.39% <ø> (+0.15%)	⬆️
...rg/opensearch/security/ssl/SslSettingsManager.java	78.20% <ø> (+5.12%)	⬆️
...earch/security/ssl/rest/SecuritySSLInfoAction.java	78.33% <ø> (-0.78%)	⬇️
...ensearch/security/ssl/util/SSLConfigConstants.java	77.77% <ø> (-1.39%)	⬇️
.../opensearch/security/ssl/config/SslParameters.java	76.92% <71.42%> (+19.97%)	⬆️
...ensearch/security/ssl/DefaultSecurityKeyStore.java	30.63% <25.00%> (+3.58%)	⬆️

... and 10 files with indirect coverage changes

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[cwperks]

Since this PR would remove the CI check opensslCITest, the branch protection rules will need to be updated to remove those as required checks.

[cwperks]

I will submit a documentation PR to remove any references to plugins.security.ssl.transport.enable_openssl_if_available or plugins.security.ssl.http.enable_openssl_if_available

[cwperks]

Created documentation PR: opensearch-project/documentation-website#9588