Support Terraform 0.14

[tquach]

Describe the Feature

Support for Terraform version 0.14.

Expected Behavior

I expect to not get "this module is not compatible, either change the source or contact..." messages when I run terraform plan.

Use Case

Upgrading to terraform 0.14 prevents us from using this module.

This module depends on https://github.com/cloudposse/terraform-null-label?ref=v0.19.2 which in turn has a ceiling on Terraform version 0.14.

The terraform-null-label module has since released version 0.20.0 which removes the version ceiling.

Alternatives Considered

Use a fork that has support for 0.14.0

[osterman]

This has been upgraded to HCL2

[Warns]

Hi @osterman @tquach from your comments I couldn't quite get what workaround you have done for this, I'm getting the null value error when running with terraform version 0.15.0

│ Error: Null value found in list
│
│   on modules/aws-cloudtrail-cloudwatch-alarms/main.tf line 121, in data "aws_iam_policy_document" "sns_topic_policy":
│  121:     resources = [local.sns_topic_arn]
│
│ Null values are not allowed for this attribute value.