wifi-service: Jar-Jar net util library

Also, change tetheringInterfaceUtils to use the same jar-jar rules.

Bug: 135998869
Test: Compiles
Test: Number of compile errors when compiled against system_current
reduces.

Change-Id: Ib2fb2bf0556af3ce1519f213f7805620675d7db7

packages/Tethering/jarjar-rules.txt

@@ -16,3 +16,4 @@ rule com.android.internal.util.TrafficStatsConstants* com.android.networkstack.t
 rule android.net.LocalLog* com.android.networkstack.tethering.LocalLog@1
 
 rule android.net.shared.Inet4AddressUtils* com.android.networkstack.tethering.shared.Inet4AddressUtils@1
+rule android.net.util.** com.android.networkstack.tethering.util.@1

packages/Tethering/src/com/android/server/connectivity/tethering/TetheringInterfaceUtils.java

@@ -21,8 +21,7 @@ import android.net.LinkProperties;
 import android.net.NetworkCapabilities;
 import android.net.RouteInfo;
 import android.net.util.InterfaceSet;
-
-import com.android.net.module.util.NetUtils;
+import android.net.util.NetUtils;
 
 import java.net.InetAddress;
 import java.net.UnknownHostException;

wifi/jarjar-rules.txt

@@ -1,5 +1,6 @@
 rule android.net.InterfaceConfigurationParcel* @0
 rule android.net.InterfaceConfiguration* com.android.server.x.wifi.net.InterfaceConfiguration@1
+rule android.net.util.** com.android.server.x.wifi.net.util.@1
 
 # We don't jar-jar the entire package because, we still use some classes (like
 # AsyncChannel in com.android.internal.util) from these packages which are not