Audit logging controller
Add tests for when the pending server is going to be deleted
Add test for audit logging successful server deletions.
Fix broken test and remove testing logging in execute config
Changed the audit logged messages.  Thanks @manishtomar
Remove extraneous comment, thanks @manishtomar
Merge pull request #488 from rackerlabs/audit_log_server_createdelete_successes

Audit log successful creation and successful deletion of servers