Fixed the hazard curves exporters from engine-2.8 [skip hazardlib]
Fixed the hazard curves exporters from engine-2.8 [skip hazardlib]


Former-commit-id: 4743d04a3fd0deb3ac758f95508d8fffcd86c0a9 [formerly 3dbc38f5fccf3df9d3be52c86c0bbbe24a2c39f3] [formerly 3dbc38f5fccf3df9d3be52c86c0bbbe24a2c39f3 [formerly fe28e6f88faf826f35a03bccf6ff1fb587f374ac]]
Former-commit-id: ae018cfca1767f107ab8867112d639b95bf4b019
Former-commit-id: 1c4f5b2a0ab6e43bf0ee9f6381d697f69493423e
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine