Abstract Elasticsearch scroll so user can list all data

[ngachung]

Calling list_granules(limit=100, page=page) to fetch all granules for a given collection will return "Result window is too large, from + size must be less than or equal to: [10000] but was [10100]. See the scroll api for a more efficient way to request large data sets." when trying to more than 10000 granules. This is a known limitation of Elasticsearch and we need to use Elasticsearch scroll to fetch all data.