The ensure_cors! function needs to be able to add CORS rules for the S3 bucket for 3 things now:
- direct S3 backups
- direct S3 uploads
As it is, only one rule can be applied, which is generally the assets rule as it is called first. This commit changes the ensure_cors! method to be able to apply new rules as well as the existing ones.
Also in this commit we are calling ensure_cors! when creating presigned PUT and multipart uploads when uploading direct to S3, so the rules definitely exist to avoid errors in the process.