Support for AmazonSideASN for aws_vpn_gateway

[robgil]

AWS now supports the ability to define the ASN number on the AWS side. This is super handy for transit use cases.

Terraform Version

TF: 0.11.1
AWS: 1.6.0

Affected Resource(s)

aws_vpn_gateway

References

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpn-gateway.html
https://github.com/terraform-providers/terraform-provider-aws/blob/master/aws/data_source_aws_vpn_gateway.go#L16-L40

[ewbankkit]

Duplicates #1859.
Fixed in #1888.

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!