Update main.tf

main.tf

 terraform {
   backend "http" { 
       address = "http://myrest.api.com/foo" 
-      lock_address = "http://myrest.api.com/foo"
-      unlock_address = "http://myrest.api.com /foo"
   } 
   required_providers {
     gitlab = {
@@ -11,6 +9,12 @@ terraform {
     }
   }
 }
+data "terraform_remote_state" "foo" {
+  backend = "http"
+  config = {
+    address = "http://my.rest.api.com"
+  }
+}
 
 variable "gitlab_access_token" {
     type = string