Follow-up from "Store lfs on object storage by default"

The following discussion from !4794 (merged) should be addressed:

• @nolith started a discussion: (+1 comment)

  This will break gdk. We should respect user configuration and not force https.

  In my gdk I have endpoint: 'http://127.0.0.1:9001' but this will generate URL like https://127.0.0.1/bucket/object?Signature=..... which is invalid