Add tests for ensuring force delete args are handled correctly
Update the config, rather than set a completely new one
Call obey_config_change to ensure servers get deleted.
Merge branch 'master' into auto-722-force-delete-errors
Use modify_state instead of just obey_config_change
Merge pull request #432 from rackerlabs/auto-722-force-delete-errors

Auto 722 force delete errors