builder/openstack: shuffle some fields to note unused fields

builder/openstack/run_config.go

@@ -17,14 +17,16 @@ type RunConfig struct {
 	SSHUsername     string   `mapstructure:"ssh_username"`
 	SSHPort         int      `mapstructure:"ssh_port"`
 	SSHInterface    string   `mapstructure:"ssh_interface"`
-	OpenstackProvider string   `mapstructure:"openstack_provider"`
-	UseFloatingIp     bool     `mapstructure:"use_floating_ip"`
 	RackconnectWait bool     `mapstructure:"rackconnect_wait"`
 	FloatingIpPool  string   `mapstructure:"floating_ip_pool"`
 	FloatingIp      string   `mapstructure:"floating_ip"`
 	SecurityGroups  []string `mapstructure:"security_groups"`
 	Networks        []string `mapstructure:"networks"`
 
+	// Not really used, but here for BC
+	OpenstackProvider string `mapstructure:"openstack_provider"`
+	UseFloatingIp     bool   `mapstructure:"use_floating_ip"`
+
 	// Unexported fields that are calculated from others
 	sshTimeout time.Duration
 }