feat: Add a homemade depends_on for MNG submodule to ensure ordering of resource creation (#867)

modules/node_groups/node_groups.tf

@@ -47,4 +47,6 @@ resource "aws_eks_node_group" "workers" {
     create_before_destroy = true
     ignore_changes        = [scaling_config.0.desired_size]
   }
+
+  depends_on = [var.ng_depends_on]
 }