If 'append_domain' option is set, append to key name before accepting.
Add references to append_domain to the docs.
Also check for append_domain when deleting keys.
Merge pull request #454 from jesusaurus/key_ids

Check if the 'append_domain' option is set before accepting the key.
Merge pull request #458 from s0undt3ch/develop

Implement deploy search paths and abspath to scripts support.
Start minion and master configuration with their respective defaults.
Fail as soon as we realize we're deploying and master was not specified anywhere in the configuration.
Fix `KeyError` and don't forget the cloud configuration.

Use any `minion` settings defined in the cloud configuration file if not defined in the VM's configuration.
Minor import call move.