Code review comment for lp:~dave-cheney/goamz/004-send-409-conflict

The change LGTM, but there are some small questions.
1) If you're changing the service to return 409, shouldn't there be a
corresponding client-side change that says "oh 409, that means it
already exists and I should just treat it as a duplicate".

2) Should we have something more like:
  s.emulate = "us-east-1"

Rather than a simple boolean s.emulateUSEast1? I'm thinking that
eventually we may find that USEast2 acts differently from USWest, vs
Asia, etc.

I realize that us-east-1 is the most tested at this point, but it does
seem like you want more than 1 bit of info for the parametrization of
the test server.

https://codereview.appspot.com/6901061/