Move TIFs in repository to S3 or LFS

[hectcastro]

There are currently over 100MB of TIFs included in the repository. We should move them to S3 and download them as part of the development environment setup, or migrate them to Git LFS.

[pomadchin]

Git LFS should be fine, i tested it but decided not to merge as it would require to delete tiffs from all commits :\

P.S. there is an issue for GT repo too: locationtech/geotrellis#2074

[hectcastro]

A rough constraint with LFS is that GitHub limits bandwidth consumption at the organization level to 1GB. This project alone has 100-200MB of TIFs. A few repository clones or CI builds will run through the 1GB organizational limit really quick.

[pomadchin]

Such a limit :\ I think than we know the answer.

[rossbernet]

Does this mean the only viable option is to move them to S3?

[hectcastro]

I believe so.