Add Tests for EthernetNetworkFactory

Test: atest EthernetNetworkFactoryTest
Bug: 191635995
Change-Id: I1c07bb6d30706c4e13002eb402fadfecb97b36d1
diff --git a/tests/ethernet/Android.bp b/tests/ethernet/Android.bp
index 4b2d270..1bc9352 100644
--- a/tests/ethernet/Android.bp
+++ b/tests/ethernet/Android.bp
@@ -28,10 +28,14 @@
     libs: [
         "android.test.runner",
         "android.test.base",
+        "android.test.mock",
     ],
 
     static_libs: [
         "androidx.test.rules",
         "ethernet-service",
+        "frameworks-base-testutils",
+        "mockito-target-minus-junit4",
+        "services.net",
     ],
 }