Merge branch 'agulina-master-patch-73409' into 'master'

Use a default branch that's not "master" in template

See merge request gitlab-org/gitlab!55949

lib/gitlab/ci/templates/Terraform/Base.latest.gitlab-ci.yml

@@ -52,7 +52,8 @@ cache:
     - gitlab-terraform apply
   when: manual
   only:
-    - master
+    variables:
+      - $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
 
 .destroy: &destroy
   stage: cleanup