Enhancement: new set of policies for AWS EC2 instance.

[harkirat22]

Two new policies are added for AWS instance (aws_instance).

1. One policy checks whether the security group attached to ec2 instance is wide open to internet and has a route to internet through internet gateway.
2. Other policy checks the permissions of instance profile attached to the ec2 instance.

[sonarqubecloud]

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[codecov]

Codecov Report

Merging #522 (afb7ec5) into master (fd73ed6) will not change coverage.
The diff coverage is n/a.

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##           master     #522   +/-   ##
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  Coverage   75.57%   75.57%           
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  Files          94       94           
  Lines        2227     2227           
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  Hits         1683     1683           
  Misses        401      401           
  Partials      143      143