feat(aws): get regions by partition

[pedrooot]

Description

This pull request introduces improvements to the get_aws_available_regions function in the prowler/providers/aws/aws_provider.py file, adding support for filtering by AWS partition. Additionally, it includes new tests to verify the functionality of this enhancement.

Enhancements to get_aws_available_regions function:

• prowler/providers/aws/aws_provider.py: Modified get_aws_available_regions to accept an optional partition parameter, allowing the function to filter available regions by the specified AWS partition.

New tests for partition filtering:

• tests/config/config_test.py: Added test_get_aws_available_regions_with_partition and test_get_aws_available_regions_with_unknown_partition to verify the function's behavior when a specific partition is provided and when an unknown partition is provided.
• tests/providers/aws/aws_provider_test.py: Added test_get_aws_available_regions_with_partition and test_get_aws_available_regions_with_unknown_partition to ensure the function correctly handles known and unknown partitions, using mocked data for testing.

Checklist

• Are there new checks included in this PR? Yes / No
  • If so, do we need to update permissions for the provider? Please review this carefully.
• Review if the code is being covered by tests.
• Review if code is being documented following this specification https://github.com/google/styleguide/blob/gh-pages/pyguide.md#38-comments-and-docstrings
• Review if backport is needed.

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.91%. Comparing base (5641160) to head (dac26c3).
Report is 6 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5748      +/-   ##
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+ Coverage   89.83%   89.91%   +0.07%     
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  Files        1128     1128              
  Lines       35154    35170      +16     
==========================================
+ Hits        31582    31623      +41     
+ Misses       3572     3547      -25     

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[jfagoagas]

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