Atmos should retry on HTTP 500 AtmosError 1040

I experience many of these errors while clearing a large Atmos container:

org.jclouds.atmos.AtmosResponseException: command DELETE https://api.atmosonline.com/rest/namespace/gaultest/00/00/03/37ab304c488645c7400f0e2aea272a74-7719 HTTP/1.1 failed with code 500, error: AtmosError [code=1040, message=The server is busy. Please try again.]

Looking at AtmosRestClientModule we do not bind a retry handle for server errors as we do for client errors with AtmosClientErrorRetryHandler.