add version and cleanup sloc

modules/compute_engine_instance_group/main.tf

@@ -1,9 +1,13 @@
 resource "google_compute_instance_group_manager" "instance_group" {
   name        = "instance-group"
   project     = var.project_id
-  region      = var.region
+  #region      = var.region
   base_instance_name = "instance"
-  instance_template = var.template_self_link
+ 
+    version {
+        name              = "webserver"
+        instance_template = var.template_self_link
+    }
+    
   target_size  = 2
-}
-
+}

modules/compute_engine_instance_group/variables.tf

@@ -1,3 +1,3 @@
 variable "project_id" {}
 variable "region" {}
-variable "template_self_link" {}
+variable "template_self_link" {}