Fixed USE_CELERY [skip CI]
Fixed USE_CELERY [skip CI]


Former-commit-id: bc0d13886753d6b46fe161f0600af5cc1fa7ae7b [formerly bc0d13886753d6b46fe161f0600af5cc1fa7ae7b [formerly b8ac537938f9d657c21691f53ac7ac64a2973d51]]
Former-commit-id: fb0d8eb1121ab32c2f0790236fd6a323788e221b
Former-commit-id: aa4948e5d2dad030a17d13b3900db143ddbf63f1
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine