feat(aws): Add Fault Tolerance Checks

[sansns]

Context

Add Fault Tolerance Checks for VPC, EFS, and Document DB.

Description

Add VPC Endpoint Multi AZ check
Add EFS Multi AZ check
Add DocumentDB Multi AZ check

Checklist

• Are there new checks included in this PR? - Yes
  • If so, do we need to update permissions for the provider? Please review this carefully. - No
• 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 89.69%. Comparing base (fef99fd) to head (c78e6c6).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5488      +/-   ##
==========================================
+ Coverage   89.62%   89.69%   +0.06%     
==========================================
  Files        1079     1082       +3     
  Lines       33381    33442      +61     
==========================================
+ Hits        29919    29996      +77     
+ Misses       3462     3446      -16     

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[MrCloudSec]

Thanks for the checks @sansns !