DRAFT [ESSI-875] bulkrax upgrade

[aploshay]

Upgrades from bulkrax 1.0.2 to 5.5.1.

Work and FileSet ingest is working in my local environment, with some outstanding issues.

Known Issues:

• ** FileSet <-> Work association**: The various import jobs aren't being sequenced to run in the necessary order (at least, in my local environment), so I'm finding I have to run the importer once to get the works created (with all the FileSets failing), then re-run it to create all the FileSets. See [bulkrax issue #955](importer tries, fails to create FileSets before Works are persisted (tested in 5.5.1, 7.0.0) samvera/bulkrax#955)~
• ** Collection creation/association**: I haven't had success ingesting to create a new Collection, or to associate to an existing one -- but I only tried this lightly, and it might be issues of configuration and/or CSV content.
• METS XML import: dropped, as it is based on XML import, which isn't supported in newer version of bulkrax

Untested:

• Exporting
• Ingested nested Works within Works

Temporarily skipped tests:

• Feature spec for CSV ingest
• METS XML Entry model spec (parser is still tested)

Regarding configuration change label:

• requires running database migrations
• may also require (or benefit from) TBD config changes to bulkrax