feat(autoscaling): add new check autoscaling_group_launch_configuration_requires_imdsv2

[danibarranqueroo]

Context

This check ensures that IMDSv2 is enabled on all instances launched by Amazon EC2 Auto Scaling groups. The check fails if the Instance Metadata Service (IMDS) version is not specified in the launch configuration or if it is set to token optional, allowing the use of either IMDSv1 or IMDSv2.

Description

Added new check autoscaling_group_launch_configuration_requires_imdsv2with 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 89.45%. Comparing base (3c929bd) to head (4b962cb).
Report is 6 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5356      +/-   ##
==========================================
+ Coverage   89.43%   89.45%   +0.01%     
==========================================
  Files        1027     1034       +7     
  Lines       31531    31758     +227     
==========================================
+ Hits        28200    28408     +208     
- Misses       3331     3350      +19     

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[sergargar]

Please, change the autoscaling_client.launch_configurations to a dict so it is easier to handle it in this check.

[sergargar]

Please, use the ARN as the key of the dict.

[danibarranqueroo]

Done! 👍