Add transport type in capabilities filter of EthernetNetworkFacotry

Bug: 167544279
Test: atest EthernetServiceTests
Change-Id: Ie64e3cff0ace413f14682736de7a1b65fa93e705
Merged-In: Ie64e3cff0ace413f14682736de7a1b65fa93e705
    (Cherry-picked from ag/14031548)
diff --git a/service-t/src/com/android/server/ethernet/EthernetNetworkFactory.java b/service-t/src/com/android/server/ethernet/EthernetNetworkFactory.java
index 75e77b9..f9e8b00 100644
--- a/service-t/src/com/android/server/ethernet/EthernetNetworkFactory.java
+++ b/service-t/src/com/android/server/ethernet/EthernetNetworkFactory.java
@@ -169,6 +169,7 @@
     private void updateCapabilityFilter() {
         NetworkCapabilities capabilitiesFilter = new NetworkCapabilities.Builder()
                 .clearAll()
+                .addTransportType(NetworkCapabilities.TRANSPORT_ETHERNET)
                 .build();
 
         for (NetworkInterfaceState iface:  mTrackingInterfaces.values()) {