destination_folder only supports baseline products and not derived products

[pindge]

destination folder path example works fine for baseline products, when it comes to derivated products that are processed based on baseline products, it isn't flexible enough to avoid conflict.

        Example: ``"ga_ls8c_ard_3/092/084/2016/06/28"``

i.e. when both ls7 and ls8 passes on the same region on the same day, both tiles will produce the same region/time path and the first processed dataset will be lost when the second dataset is processed for the same region and day.

Proposed solution: to add platform as part of the path

https://github.com/opendatacube/eo-datasets/blob/develop/eodatasets3/names.py#L293