feat(autoscaling): add new check autoscaling_group_launch_configuration_no_public_ip

[danibarranqueroo]

Context

This check verifies whether the launch configuration associated with an Auto Scaling group assigns a public IP address to its instances. The check fails if the launch configuration assigns a public IP address.

There was a similar check on ec2 that verifies this using launch template instead of launch configuration, I've followed what this SH control says but if it's worth to check also launch templates as it's explained here for example, please ping me and we can discuss if this new feature should be added here or as a new check.

Description

Added new check autoscaling_group_launch_configuration_no_public_ip with its unit tests.

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 89.37%. Comparing base (4181ca5) to head (6fe9855).
Report is 16 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5359      +/-   ##
==========================================
- Coverage   89.38%   89.37%   -0.01%     
==========================================
  Files        1018     1019       +1     
  Lines       31278    31299      +21     
==========================================
+ Hits        27959    27975      +16     
- Misses       3319     3324       +5     

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