Fixed a bug with celery ping
Fixed a bug with celery ping


Former-commit-id: e11715d79296591e29cb102ae7a9664b1312303d [formerly ad73a9870b4e9102b63890442f2834cabec52469] [formerly ad73a9870b4e9102b63890442f2834cabec52469 [formerly c75b96c3a8b19cf0b0acb4efa83e5c70c7e7d561]]
Former-commit-id: 5c3b93b9c9935aceef9c24e975f20b7b74f7fd34
Former-commit-id: 191a718405420dfe606bf110fcc2f3bb724fb10d
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine