export/hazard:
export/hazard:

Refactored hazard curve export to use `all_curves_simple`.


Former-commit-id: f2396d7175a073ed4d6f3e019bda26bc301a45f9 [formerly 92bfeb59040dbe4c803de4b4a3e984967b1b46b2] [formerly 92bfeb59040dbe4c803de4b4a3e984967b1b46b2 [formerly f56b8ddc573c7ada2b20c2f3ab5ccd6f644179ce]]
Former-commit-id: cbe78512d93082bbd9f23fbe05dc9d970265fe61
Former-commit-id: 66e2bc2bef4126dd9948ce8ff20bcfc407c992f5
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine