.gitlab-ci.yml: Always launch server review environments

Otherwise we may miss a commit that would break the review server.

To avoid a large burden on server side (vdj#1039) such environment will be automatically stopped after 2 months

.gitlab-ci.yml

@@ -420,7 +420,7 @@ deploy_review_server:
     name: review_server/$CI_BUILD_REF_NAME
     url: http://$CI_BUILD_REF_SLUG.server.ci.vidjil.org/browser/
     on_stop: stop_deploy_review_server
-  when: manual
+    auto_stop_in: 2 months
   only:
     - /^feature-.*s.*\/.*$/
     - /^hotfix-.*s.*\/.*$/