fix qa test. loss_curve -> event_loss_curve
fix qa test. loss_curve -> event_loss_curve


Former-commit-id: ecec2caa6dceb5af3dc43ae0db6df1688668c627 [formerly 4b5000a6e5a646d733fcb29bf288c8a2cf0292ae] [formerly 4b5000a6e5a646d733fcb29bf288c8a2cf0292ae [formerly b62a70debb7dba99911b37a43c2a5aaac5d03428]]
Former-commit-id: 18020232bd72fc4569afea6290045d841b8a1b98
Former-commit-id: b282d4730769c1af4f05428baceedef001a96cf0
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine