Make syncs to S3 quiet
Make syncs to S3 quiet

There can be quite a number of files and the output isn't very helpful,
so just squelch it.


Former-commit-id: fbe141ff6e69b3bda550962cfdd3517e9255b43e
brandur/sorg,brandur/sorg,brandur/sorg,brandur/sorg,brandur/sorg