Fix unmarshal error.

core/unifi/usg_influx.go

@@ -158,6 +158,7 @@ func (u USG) Points() ([]*influx.Point, error) {
 			"device_mac":                u.Mac,
 			"site_name":                 u.SiteName,
 			"name":                      p.Name,
+			"up":                        p.Up.Txt,
 			"dhcpd_dns_enabled":         p.DhcpdDNSEnabled.Txt,
 			"dhcpd_enabled":             p.DhcpdEnabled.Txt,
 			"dhcpd_ntp_enabled":         p.DhcpdNtpEnabled.Txt,

core/unifi/usg_type.go

@@ -185,7 +185,7 @@ type USG struct {
 		Mac                    string   `json:"mac"`
 		IsGuest                FlexBool `json:"is_guest"`
 		IP                     string   `json:"ip"`
-		Up                     string   `json:"up"`
+		Up                     FlexBool `json:"up"`
 		NumSta                 FlexInt  `json:"num_sta"`
 		RxBytes                FlexInt  `json:"rx_bytes"`
 		RxPackets              FlexInt  `json:"rx_packets"`