add terraform config files

terraform/versions.tf

@@ -0,0 +1,17 @@
+terraform {
+  required_version = ">= 0.12"
+  required_providers {
+    random = "~> 2.1"
+    local = "~> 1.2"
+    null = "~> 2.1"
+    template = "~> 2.1"
+  }
+}
+
+/*
+** Defining provider versions inside provider block deprecated in Terraform 0.13 and above  
+**
+provider "random" {
+  version = "~> 2.1"
+}
+*/