Merge pull request #552 from Jasintha/release-3.0.x

MQTT subscription topic patten should changed to this format to get policy updates

components/device-types/virtual-fire-alarm-plugin/org.wso2.carbon.device.mgt.iot.virtualfirealarm.agent.advanced.impl/src/main/java/org/wso2/carbon/device/mgt/iot/virtualfirealarm/agent/advanced/core/AgentConstants.java

@@ -57,7 +57,7 @@ public class AgentConstants {
  		---------------------------------------------------------------------------------------	*/
 	public static final int DEFAULT_MQTT_RECONNECTION_INTERVAL = 2;        // time in seconds
 	public static final int DEFAULT_MQTT_QUALITY_OF_SERVICE = 0;
-	public static final String MQTT_SUBSCRIBE_TOPIC = "%s/" + DEVICE_TYPE + "/%s";
+	public static final String MQTT_SUBSCRIBE_TOPIC = "%s/" + DEVICE_TYPE + "/%s/#";
 	public static final String MQTT_PUBLISH_TOPIC = "%s/" + DEVICE_TYPE + "/%s/temperature";
 	/*	---------------------------------------------------------------------------------------
 								XMPP Connection specific information