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Why do you want this feature?
When draining nodes on a production cluster, it might be safer to use a health check between node/nodegroup draining loops - to ensure that until now things

cfn-lint version: (cfn-lint --version)
cfn-lint 0.32.1

Description of issue.
cfn-lint currently does not appear to validate that the contents of the AllowedPattern property of a template parameter contains a valid regular expression when present, it would be useful if cfn-lint could check this.

For example a template containing:

Parameters:
    MyTestParameter:
        Descri

#22 introduced a feature to guess actions that are similar to an existing policy. It currently doesn't support all actions.

Here's things I currently know are missing (comment if you find more):

• KMS: Encrypt, Decrypt, GenerateDataKey, ...
• ECR: BatchDeleteImage, BatchGetImage, ...
• *Deregister*
• *Modify*
• *Remove*
• API Gateway: (DELETE,

Contract tests should use temporary credentials from the role arn for all client calls if a role is specified for the contract tests. This should be done when listing the cloudformation exports as well as when getting the account id.

Line references:
https://github.com/aws-cloudformation/cloudformation-cli/blob/033606a83cbd49387272f3ec2c8515459c8724b0/src/rpdk/core/boto_helpers.py#L82
https:/