Fix TetheringPrivilegedTests crash

After separat BpfMap to a library, its package name is jarjar to
com.android.network.stack.util*. Also jarjar BpfMap of
TetheringPrivilegedTests to fix crash in jni registered.

Bug: 179733303
Test: atest TetheringPrivilegedTests
Change-Id: Ia9bc819a44fe26bf2ff7a46351ea60f2eeb02933

Tethering/tests/privileged/Android.bp

@@ -26,6 +26,7 @@ java_defaults {
         "libtetherutilsjni",
     ],
     jni_uses_sdk_apis: true,
+    jarjar_rules: ":TetheringTestsJarJarRules",
     visibility: ["//visibility:private"],
 }