Changed DataStore.get_attrs to look at the parent [skip hazardlib]
Changed DataStore.get_attrs to look at the parent [skip hazardlib]


Former-commit-id: 80b0c5ba8b805368112ad1679766123ac63b8e65 [formerly 80b0c5ba8b805368112ad1679766123ac63b8e65 [formerly 3356dc55faf25f861fdae1b6ff9013bae295d8a9]]
Former-commit-id: 0b8ffc49bcf44e65f1504c552eb03f08f79d6b3f
Former-commit-id: 69cced06436f1185c560401361cbb36148f18148
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine