Serialize hazard curves to DB when output_type is 'db'.
Serialize hazard curves to DB when output_type is 'db'.


Former-commit-id: c14c4d2a2e44f2d39824263ae2c06ee8d42ed232 [formerly c14c4d2a2e44f2d39824263ae2c06ee8d42ed232 [formerly 0162b64fcce794038e24f4b72d88515859022170]]
Former-commit-id: 51377c51331f7a66fdeaa130e74dc256bc7f434b
Former-commit-id: f753e0153ca7360fe2959cec59ac85a8dc1e53fe
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine