Rationalise tests for runtime

[IanHopkinson]

The tests are a bit flakey. test_get_date_range_from_live_api fails sometimes with a 503 error, test_calculate_indicator_for_admin1_litpop and test_export_indicator_data_to_csv_litpop sometimes fail because the NASA Black Marble data does not all download correctly.

The tests are slow, overall they are slower than they need to be because we test each dataset both in test_climada_interface and test_creat_csv_files are essentially the same:

196.76s call tests/test_climada_interface.py::test_get_date_range_from_live_api 112.79s call tests/test_climada_interface.py::test_flood_shim 79.38s call tests/test_create_csv_files.py::test_export_indicator_data_to_csv_tropical_cyclone 72.41s call tests/test_create_csv_files.py::test_export_indicator_data_to_csv_river_flood 60.60s call tests/test_climada_interface.py::test_calculate_indicator_for_admin1_river_flood 60.53s call tests/test_climada_interface.py::test_calculate_indicator_for_admin1_tropical_cyclone 36.37s call tests/test_create_csv_files.py::test_export_indicator_data_to_csv_earthquake 23.37s call tests/test_climada_interface.py::test_calculate_indicator_for_admin1_crop_production 18.21s call tests/test_create_csv_files.py::test_export_indicator_data_to_csv_flood 17.47s call tests/test_create_csv_files.py::test_export_indicator_data_to_csv_wildfire 13.33s call tests/test_download_admin_geometry.py::test_get_admin1_shapes_from_hdx_no_data_case 10.42s call tests/test_climada_interface.py::test_calculate_indicator_for_admin1_earthquake 8.73s setup tests/test_create_csv_files.py::test_create_dataframes 8.56s call tests/test_climada_interface.py::test_calculate_indicator_for_admin1_flood 7.33s call tests/test_climada_interface.py::test_calculate_indicator_for_admin1_wildfire 6.39s call tests/test_create_datasets.py::test_create_datasets_in_hdx 2.33s call tests/test_climada_interface.py::test_filter_dataframe_with_geometry 1.60s call tests/test_climada_interface.py::test_calculate_indicator_timeseries_admin 1.27s call tests/test_create_csv_files.py::test_export_indicator_data_to_csv_crop_production

[IanHopkinson]

Disabled most of the export to csv tests and limited the date range from live api test to one indicator