Job creation "succeeds" if col/exp/chan exists (even without user permission)

[j6k4m8]

Data are not written, but no error is thrown during ingest:

• col/exp/chan exists in boss
• user does not have read/write permissions

expected:

• job creation fails with 404 or permission error

actual:

• full ingest runs, data are uploaded, SQS populated, but not written to boss