CI: Always tag on */production and */staging branches

Signed-off-by: Andrej Shadura <andrew.shadura@collabora.co.uk>

.gitlab-ci.yml

@@ -190,6 +190,8 @@ tag-latest-docker-image:
             "docker://$CI_REGISTRY_IMAGE/$image:$TAG_NEW"
         echo Tagged "$CI_REGISTRY_IMAGE/$image:$TAG_NEW"
       done
-  only:
-    variables:
-      - $CI_DEFAULT_BRANCH == $CI_COMMIT_BRANCH
+  rules:
+    - if: $CI_DEFAULT_BRANCH == $CI_COMMIT_BRANCH
+      when: always
+    - if: $CI_COMMIT_BRANCH =~ /\/(production|staging)$/
+      when: always