Keep the new resque.yml aside and use it once we've checked out master

Signed-off-by: Rémy Coutable <remy@rymai.me>

.gitlab-ci.yml

@@ -285,10 +285,13 @@ migration paths:
     - git checkout HEAD .
     - git fetch --tags
     - git checkout v8.5.9
+    - mv config/resque.yml config/resque.yml.new
     - 'echo test: unix:/var/opt/gitlab/redis/redis.socket > config/resque.yml'
     - bundle install --without postgres production --jobs $(nproc) "${FLAGS[@]}" --retry=3
     - rake db:drop db:create db:schema:load db:seed_fu
     - git checkout $CI_BUILD_REF
+    - rm config/resque.yml
+    - mv config/resque.yml.new config/resque.yml
     - rake db:migrate
 coverage: