Always scrub data when deleting a server from DO
Hardcode some responses to tests
Record and Zone put requests are idempotent.
Merge pull request #2526 from icco/do_spunge

[digitalocean|compute] Set scrub data to true for all server destroy requests
Merge pull request #2527 from pdrakeweb/dyn-idempotent-requests

Dynect Record and Zone put requests are idempotent.