phylo: Use multiple inputs to include PPX RESTRICTED data #15
Description
Similar to nextstrain/rsv#97
Since #13, ingest uploads files for OPEN PPX data and *with_restricted files for OPEN + RESTRICTED PPX data, which means we are saving duplicates of the OPEN data on S3.
If we use the generic pattern for additional inputs to support multiple inputs in the phylo workflow, we can update ingest to upload OPEN and RESTRICTED data separately and then join them in the phylo workflow.