Swap to a FIFO queue

[BryanFauble]

Problem:

1. AsyncIO has no order guarentee for the AsyncIO tasks that are created, it can lead to us requesting a auth token for a specific file and not using it until much later, leading it to be expired.

Solution:

1. Try out moving to a FIFO queue for file downloads that works by indexing the container to be downloaded, and then starting a number of workers that will concurrently download each file. This makes it such that only a smaller number of files can enter the download process rather than everything.

Testing:

1. More testing is needed

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