Get FILE_PATH_FIELD_DIRECTORY from datastore.get_datadir()
Get FILE_PATH_FIELD_DIRECTORY from datastore.get_datadir()


Former-commit-id: dd35841e88b808fa4ec9e7964f1a4ccba298eb42
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine