calcs/hazard/general:
calcs/hazard/general:

Updated the `export` method to use the new hazard export interface
(which requires the caller to specify an export format).


Former-commit-id: 2f28945dc18cbd82f9fab6c52de25be15737878e
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine