Replace NetworkUtils methods

NetworkUtils is moved to connectivity mainline module which is
not accessible for module outside. getNetworkPart() method is
used by wifi lib and Settings but no usage inside the module,
so move the method to framework lib to share with wifi lib and
Settings.

Also, NetworkUtils.numericToInetAddress() method is also hidden
and deprecated. It should be replaced by
InetAddresses.parseNumericAddress().

Update the corresponding usage to refer to these methods.

Bug: 172183305
Test: atest SettingsRoboTests
Change-Id: I8240b1c74b53d5d66850d9a3ec7d5e5c11558e6a
Merged-In: I2fb674e0d7da0b11ba70177853fd6259bce372a3

src/com/android/settings/wifi/details2/WifiDetailPreferenceController2.java

@@ -40,7 +40,6 @@ import android.net.Network;
 import android.net.NetworkCapabilities;
 import android.net.NetworkInfo;
 import android.net.NetworkRequest;
-import android.net.NetworkUtils;
 import android.net.RouteInfo;
 import android.net.Uri;
 import android.net.wifi.WifiConfiguration;
@@ -64,6 +63,7 @@ import androidx.preference.PreferenceCategory;
 import androidx.preference.PreferenceFragmentCompat;
 import androidx.preference.PreferenceScreen;
 
+import com.android.net.module.util.NetUtils;
 import com.android.settings.R;
 import com.android.settings.Utils;
 import com.android.settings.core.FeatureFlags;
@@ -869,7 +869,7 @@ public class WifiDetailPreferenceController2 extends AbstractPreferenceControlle
         try {
             InetAddress all = InetAddress.getByAddress(
                     new byte[]{(byte) 255, (byte) 255, (byte) 255, (byte) 255});
-            return NetworkUtils.getNetworkPart(all, prefixLength).getHostAddress();
+            return NetUtils.getNetworkPart(all, prefixLength).getHostAddress();
         } catch (UnknownHostException e) {
             return null;
         }