v0.73.0

Make `elb_name` optional @lagerfeuer (#215)

what

Make elb_name in ecs_load_balancer optional, as described in the linked Terraform docs for ECS Service.

why

Currently, when creating a service without elb_name, Terraform will fail because it expects the variable to be set. The workaround is to set it to null.

references

• https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecs_service#load_balancer