fixes Bug 1083901 - refactor Ceph out of the picture

we're not gonna use Ceph, but the BotoS3 storage classes will still be useful to us.  Let's remove the word "ceph" and move to there being only one bucket.
actually, this file serves no purpose at all, as we're not using ceph.    Do we need an example of setting up a collector to connect to S3?  Are we going to stop collecting to file sytems?