Separate iam into root-iam and iam (#18)

Author: aknysh

aws/root-iam/main.tf

@@ -0,0 +1,20 @@
+terraform {
+  required_version = ">= 0.11.2"
+
+  backend "s3" {}
+}
+
+variable "aws_assume_role_arn" {
+  type = "string"
+}
+
+variable "namespace" {
+  type        = "string"
+  description = "Namespace (e.g. `cp` or `cloudposse`)"
+}
+
+provider "aws" {
+  assume_role {
+    role_arn = "${var.aws_assume_role_arn}"
+  }
+}