reorganized more clearly the test_csv_to_db_loader_end_to_end test
reorganized more clearly the test_csv_to_db_loader_end_to_end test


Former-commit-id: e6aeb925fed4d0c4679df4f6a0c969d8bcec54e8 [formerly e6aeb925fed4d0c4679df4f6a0c969d8bcec54e8 [formerly fc777e0fac0a7d585b0ee9256b149547c704df94]]
Former-commit-id: 82d14317be67af25e5831c4073cbf506fbeb7e12
Former-commit-id: 5a215b095a0fa8fcc86a84caa56f5efc0a1b4b43
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine