Remove limitation on inherited gitlab-ci variables

This patch removes the limitation for inheriting variables. This makes
it easier to use global variables in build-args or alike.

gitlab-ci-template.yml

@@ -38,12 +38,7 @@ container-tagging:
   stage: tag
   inherit:
     default: false
-    variables:
-      - CI_REGISTRY
-      - CI_REGISTRY_USER
-      - CI_REGISTRY_PASSWORD
-      - CI_REGISTRY_IMAGE
-      - CI_REGISTRY_IMAGE_VERSION
+    variables: true
   image: quay.io/sheogorath/build-ah-engine:1.3.0
   before_script:
     - podman login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY