Refactoring/aws/iam

[Aboisier]

This PR migrates the IAM service to the new architecture, see #183 .

EDIT:
The resources count changed a bit because inline policies were included in the policies count. This did not make sense because, in the dropdown, you would see, Policies (17), (15 managed policies and 2 inline, for example), but the policies page would only show the managed policies.

[codecov-io]

Codecov Report

Merging #264 into refactoring/resource-configs will increase coverage by 0.21%.
The diff coverage is 20.44%.

@@                       Coverage Diff                        @@
##           refactoring/resource-configs     #264      +/-   ##
================================================================
+ Coverage                          32.6%   32.81%   +0.21%     
================================================================
  Files                               150      157       +7     
  Lines                              5610     5701      +91     
================================================================
+ Hits                               1829     1871      +42     
- Misses                             3781     3830      +49

Impacted Files	Coverage Δ
ScoutSuite/providers/aws/facade/awslambda.py	80% <ø> (ø)	⬆️
ScoutSuite/providers/aws/facade/cloudtrail.py	45.45% <0%> (ø)	⬆️
ScoutSuite/providers/aws/facade/directconnect.py	71.42% <0%> (ø)	⬆️
ScoutSuite/providers/aws/facade/elasticache.py	39.53% <0%> (ø)	⬆️
ScoutSuite/providers/aws/facade/cloudformation.py	35% <0%> (ø)	⬆️
ScoutSuite/providers/aws/provider.py	9.82% <0%> (-0.07%)	⬇️
ScoutSuite/providers/aws/facade/emr.py	40% <0%> (ø)	⬆️
ScoutSuite/providers/aws/facade/efs.py	27.77% <0%> (ø)	⬆️
ScoutSuite/providers/aws/facade/ec2.py	31.34% <0%> (ø)	⬆️
ScoutSuite/providers/aws/facade/iam.py	12.41% <12.41%> (ø)
... and 19 more

---

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[vifor2]

💯 💯 💯

EDIT: Except for the part where the tests now fail May need to merge @misg's refactor of ELBv2 into this branch to solve the issue : ImportError: No module named 'ScoutSuite.providers.aws.services.elbv2'

[Aboisier]

💯 💯 💯
Thanks for the review!

EDIT: Except for the part where the tests now fail May need to merge @misg's refactor of ELBv2 into this branch to solve the issue : ImportError: No module named 'ScoutSuite.providers.aws.services.elbv2'

It was just a bad merge actually. :'(

[misg]

Wow amazing work there, I can only imagine how tricky this could have been! I mainly left suggestions about concurrency. 😉