Let consumer override the environment in remote_state module

Author: mbklein

modules/remote_state/main.tf

@@ -1,9 +1,13 @@
+locals {
+  env = coalesce(var.environment, terraform.workspace)
+}
+
 data "terraform_remote_state" "this" {
   backend = "s3"
 
   config = {
     bucket = var.state_bucket
-    key    = "env:/${terraform.workspace}/${var.component}.tfstate"
+    key    = "env:/${local.env}/${var.component}.tfstate"
   }
 }
 

modules/remote_state/variables.tf

@@ -1,3 +1,8 @@
+variable "environment" {
+  type    = string
+  default = ""
+}
+
 variable "component" {
   type    = string
 }