getting this:
Error: "replication_group_id": conflicts with subnet_group_name

  on ../modules/redis/main.tf line 62, in resource "aws_elasticache_cluster" "cluster":
  62: resource "aws_elasticache_cluster" "cluster" {

resource "aws_elasticache_cluster" "cluster" {
  cluster_id           = "redis-test-cluster"
  replication_group_id = "${aws_elasticache_replication_group.redis_group.id}"
  subnet_group_name    = "${aws_elasticache_subnet_group.sub_gr.name}"
}

resource "aws_elasticache_subnet_group" "sub_gr" {
  name        = "${var.environment}"
  description = "ElastiCache subnet group for ${var.environment}"
  subnet_ids  = ["${var.subnet_id}"]
}

resource "aws_elasticache_replication_group" "redis_group" {
ILL OMIT alot of stuff here, just for the sake of the group name
}