[ONOS-3606] update vtn's bug: if ovs has a plurality of bridge, the code

should filter br-int and get the ports via deviceService.

Change-Id: I3112f1fa5e72460fed77f03ad6cc21858d110276

@@ -583,19 +583,22 @@ public class VTNManager implements VTNService {
                             .behaviour(BridgeConfig.class);
                     Collection<BridgeDescription> bridgeDescriptions = bridgeConfig
                             .getBridges();
-                    Set<PortNumber> ports = bridgeConfig.getPortNumbers();
                     Iterator<BridgeDescription> it = bridgeDescriptions
                             .iterator();
-                    if (it.hasNext()) {
+                    while (it.hasNext()) {
                         BridgeDescription sw = it.next();
+                        if (sw.bridgeName().name().equals(VtnConfig.DEFAULT_BRIDGE_NAME)) {
+                            List<Port> ports = deviceService.getPorts(sw.deviceId());
                             ports.stream()
-                                .filter(p -> p.name()
+                                    .filter(p -> p.annotations().value(AnnotationKeys.PORT_NAME)
                                             .equalsIgnoreCase(tunnelName))
                                     .forEach(p -> {
                                 l2ForwardService.programTunnelOut(sw.deviceId(),
-                                                              segmentationId, p,
+                                                                  segmentationId, p.number(),
                                                                   dstMac, type, ipAddress);
                             });
+                            break;
+                        }
                     }
                 });
     }

@@ -37,7 +37,7 @@ import org.onosproject.net.driver.DriverHandler;
  */
 public final class VtnConfig {
 
-    private static final String DEFAULT_BRIDGE_NAME = "br-int";
+    public static final String DEFAULT_BRIDGE_NAME = "br-int";
     private static final String DEFAULT_TUNNEL = "vxlan-0.0.0.0";
     private static final Map<String, String> DEFAULT_TUNNEL_OPTIONS = new HashMap<String, String>() {
         {