The idea is that we should have a suite of pure-S3 tests that we can
point at AWS to verify that we've written accurate tests, then point at
Swift-with-s3api to verify that we've correctly implemented the S3 api.
As a start, just check GET Service; go ahead and create a few buckets
so we can see them in the service listing.
Change-Id: I283757cd3084b1c83a1e9bf0f46b6ce9d7ee8eb9