Partition json table by _ingestion_id

[bmitchinson]

Ticket Link #792

Description

• Ensure that _ingestion_id is after _extract_start_time in schema to allow for partitioning
• Partitions the json table by _ingestion_id
  • Updates s3Writer to support partition_value and partition_key options
• Move tests from unit/integration to unit to avoid confusion

Reminders:

• If changing elixir code in an "app", did you update the relevant version
  in mix.exs?
• If altering an API endpoint, was the relevant postman collection updated?
  • If a new version of smart_city is being used (new fields on a struct), were the relevant postman collections updated?