Wouldn't it be better if the `.fog` YAML file would be used to configure vsphere? It's not well documented, but should go into the users home folder e.g. to `~/.fog` and may contain the config parameters :vsphere_username, :vsphere_password, :vsphere_server :vsphere_port, :vsphere_path, :vsphere_ns :vsphere_rev, :vsphere_ssl and :vsphere_expected_pubkey_hash