Add unit test for BpfInterfaceMapUpdate

Bug: 215095957
Test: atest FrameworkNetTests

Change-Id: I92d45e5a606f466ce42504629cb3f87fd9e25d22
diff --git a/tests/unit/Android.bp b/tests/unit/Android.bp
index 48751f4..4c605f3 100644
--- a/tests/unit/Android.bp
+++ b/tests/unit/Android.bp
@@ -88,6 +88,7 @@
         "java/com/android/server/connectivity/NetdEventListenerServiceTest.java",
         "java/com/android/server/connectivity/VpnTest.java",
         "java/com/android/server/net/ipmemorystore/*.java",
+        "java/com/android/server/net/BpfInterfaceMapUpdaterTest.java",
         "java/com/android/server/net/NetworkStats*.java",
     ]
 }