chore: change live preview prob

* chore: change live preview prob
* chore: change exit liveroom

https://code.byted.org/iesqa/httprunner/merge_requests/33

hrp/pkg/uixt/android_device.go

@@ -154,6 +154,10 @@ type AndroidDevice struct {
 	LogOn        bool   `json:"log_on,omitempty" yaml:"log_on,omitempty"`
 }
 
+func (dev *AndroidDevice) System() string {
+	return "android"
+}
+
 func (dev *AndroidDevice) UUID() string {
 	return dev.SerialNumber
 }