Payload is broken when Channel is used

[lenzch]

When an Android app is active and receives a push notification the payload field of the message is overwritten with the channel data.

For example, when sending a message like following to the IBM Push Notifications ReST API

{"message": {
        "alert": "My Message"
    },
	"settings": {
		"gcm": {
            "channelId": "Channel1",
            "payload": {"someKey": "someValue"}
		}
	}
}

The resulting message that is provided to the app is
MFPSimplePushNotification :{url:null, payload:{"enableVibration":true,"importance":3,"lockScreenVisibility":1,"bypassDND":false,"lightColor":"GREEN","showBadge":true,"channelName":"My Channel Name","enableLights":true,"channelId":"Channel1"}, alert:My Message}

Following line seems to be the root cause of this issue.

bms-clientsdk-android-push/lib/src/main/java/com/ibm/mobilefirstplatform/clientsdk/android/push/internal/MFPInternalPushMessage.java

Line 128 in 0beaa8c

//channelJson = source.readString();

Could you please fix that soon?