Add implementation of isNetworkLoggingEnabled to FakeSecurityController

Fix build breakage introduced by ag/1666505.

Test: Did a local build.

Change-Id: Ie3c2d8cc89f71583b546a6085c3f991e0affaa61

packages/SystemUI/tests/src/com/android/systemui/utils/leaks/FakeSecurityController.java

@@ -48,6 +48,11 @@ public class FakeSecurityController extends BaseLeakChecker<SecurityControllerCa
         return null;
     }
 
+    @Override
+    public boolean isNetworkLoggingEnabled() {
+        return false;
+    }
+
     @Override
     public boolean isVpnEnabled() {
         return false;