fix(nebula): improve resource templates

modules/virtualMachine/locals.tf

@@ -3,4 +3,5 @@ locals {
    system_image_name = "system.${local.fqdn}"
    system_image_source = var.system_image_source
    data_image_name = "data.${local.fqdn}"
+   group = "${var.group}"
 }

modules/virtualMachine/main.tf

@@ -1,4 +1,3 @@
-
 resource "opennebula_group" "main" {
   name = var.group
 }