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.
So for PHX->S3 we want to continue collecting to filesystem and use crashmover I think... once we are on EC2 I think we explicitly don't want to write to local disk and want to collect straight to S3 (because local EC2 storage is not durable and can disappear anytime)