Use Gitlab Terraform state

.gitlab-ci.yml

 image: busybox:latest
 
+variables:
+  TF_ROOT: ${CI_PROJECT_DIR}/manifests/elastic
+  TF_ADDRESS: ${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/terraform/state/manifests/elastic
+
 cache:
   key: manifests-elastic
   paths:
@@ -14,8 +18,6 @@ elastic:
     name: registry.gitlab.com/gitlab-org/terraform-images/stable:latest
     entrypoint: [""]
   variables:
-    TF_ROOT: ${CI_PROJECT_DIR}/manifests/elastic
-    TF_ADDRESS: ${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/terraform/state/manifests/elastic
     TF_VAR_ec_apikey: $EC_API_KEY
   script:
     - cd ${TF_ROOT}