[$200] Use bulk api in db to es script

[callmekatootie]

Use Elasticsearch's bulk api in the db to es data migration script

You may have to still call it multiple times (but not as much as we do currently for each individual record) since there is a specific order in which the models are to be indexed and we are also setting up the enrich processor

[callmekatootie]

Assigned to @xxcxy

[callmekatootie]

PAID in https://software.topcoder.com/review/actions/ViewProjectDetails?pid=30172478