aws_lb_listener support for redirects and fixed responses

[ghost]

This issue was originally opened by @domenickp as hashicorp/terraform#18612. It was migrated here as a result of the provider split. The original body of the issue is below.

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AWS recently released support for a couple new actions on LBs: redirect and fixed response. Please add support for them in the aws_lb_listener resource.

https://aws.amazon.com/about-aws/whats-new/2018/07/elastic-load-balancing-announces-support-for-redirects-and-fixed-responses-for-application-load-balancer/

https://docs.aws.amazon.com/elasticloadbalancing/latest/application/load-balancer-listeners.html#listener-rules

[blckct]

Duplicate of #5344

[bflad]

Thanks @blckct! Closing as a duplicate of the earlier #5344 to consolidate discussions and efforts there.

[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!