Merge branch 'zj-fix-flags-usage-gitlab-ci-yml' into 'master'

Fix BASH usage in the .gitlab-ci.yml

As discussed on Slack. Even though I created the fix, I was a mere code monkey in this case.

See merge request !7693

.gitlab-ci.yml

@@ -20,7 +20,7 @@ before_script:
   - source ./scripts/prepare_build.sh
   - cp config/gitlab.yml.example config/gitlab.yml
   - bundle --version
-  - '[ "$USE_BUNDLE_INSTALL" != "true" ] || retry bundle install --without postgres production --jobs $(nproc) "${FLAGS[@]}"'
+  - '[ "$USE_BUNDLE_INSTALL" != "true" ] || retry bundle install --without postgres production --jobs $(nproc) $FLAGS'
   - retry gem install knapsack
   - '[ "$SETUP_DB" != "true" ] || bundle exec rake db:drop db:create db:schema:load db:migrate add_limits_mysql'
 
@@ -328,7 +328,7 @@ migration paths:
     - git checkout -f FETCH_HEAD
     - cp config/resque.yml.example config/resque.yml
     - sed -i 's/localhost/redis/g' config/resque.yml
-    - bundle install --without postgres production --jobs $(nproc) ${FLAGS[@]} --retry=3
+    - 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
     - source scripts/prepare_build.sh