Support AWS Gov Cloud

[crutchfield]

Describe the Feature

The ARN partition is hardcoded to AWS. Since it is hardcoded the module does not work in AWS Gov Cloud or other partitions. This is encountered when 1) creating log policy 2) SNS topic policy and 3) SNS KMS Key policy.

Expected Behavior

I expected the partition would be automatically derived for creating policies and the module would successfully deploy in an AWS Gov Cloud environment.

Use Case

This would be valuable for deploy to other partitions (e.g., aws-us-gov, aws-cn).

Describe Ideal Solution

Use aws_partition to automatically determine partition.

For example,

data "aws_partition" "current" {}

resources = [
      "arn:${data.aws_partition.current.partition}:s3:::my-bucket",
    ]

Alternatives Considered

Allow user to set a variable.

Additional Context

No response