add helper functions to use is2_data_ops to grab a granule for testing #5
Description
In the event a granule is needed for testing downstream functionality (e.g. reading, plotting, analysis), this repo makes it easy to download the granule but will need a few helper functions to then find the granule within the test machine filesystem and use it (currently this is baked into is2_data_ops.get_vars()) from wherever it is downloaded to. We'd also want to make sure that none of the granules get committed.