Automate elasticsearch indexing

[mstabile75]

After data is loaded allow for auto indexing of data into elasticsearch.

[mstabile75]

Will now index the dpla data.

• need to add the rml mapping
• need to add other index to processing updates i.e. bf:Work query has all of the data to index subjects, items, instances etc
• need to add multiprocessing for large batch querying

[mstabile75]

functional capability added in commit 5f7a861
Auto indexing not added to configmanager yet