[V3 Rest API] Bulk Ingest tasks return as complete

This affects only the bulk ingest endpoint in v3 (currently in open beta)
Previously, bulk ingest async tasks would return as complete only if there were no errors in the ingestion.
The new behavior is that those tasks will now return as complete even if there are data-level errors in the ingestion. In order to understand if any items failed, developers will need to look at the error count value in the return data.