Invalid parameterized type resolution for properties containing nested aggregate types (i.e. Map<Json> & List<Json>)

[RazzM13]

Thanks to @aap69, we've discovered a problem with cfn-lint's type inference of SAM properties that may contain as values nested aggregate types (i.e. JSON or any other aggregate structure within a Map or a List).

Steps to reproduce:

1. Save the following problematic sample to a file (e.g. sam_20161031_issue_new.yaml):

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31

Resources:
  somethingBeautiful:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: somethingCool
      Handler: somethingAwesome
      Policies:
        -
          Statement:
            -
              Effect: "Allow"
              Action: "*"
              Resource: "*"
      Runtime: someRuntime
      Timeout: 300

2. Attempt to validate the file containing the sample template:

0 infos
0 warn
1 crit
Resource: Resources > somethingBeautiful > Properties > Policies
Message: Expecting an object, got []
Documentation: https://github.com/awslabs/serverless-application-model/blob/develop/versions/2016-10-31.md#awsserverlessfunction

3. Consult the output of the previous command.

Expected result: The validation should have passed.
Actual result: The validation failed.

[RazzM13]

Hey @martysweet, please feel free to have a look over this and let me know if anything is missing or otherwise incorrect.

[martysweet]

Thanks @RazzM13, this is now in v1.9.2 👍