fixed missing configuration file argument for celery commands
fixed missing configuration file argument for celery commands


Former-commit-id: 6307618a2d30f02232e84729107a04a24e4d9ec6 [formerly 6307618a2d30f02232e84729107a04a24e4d9ec6 [formerly fd2ba95caeff8d2386199b2d512c1747f79a4f5e]]
Former-commit-id: 96ca8a0559244df82ced904c489008e5af73652a
Former-commit-id: 05867b1d25f85b21b08b474a5eaf28d7e4f52cf3
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine