Implement createTapInterface in vmnic

Bug: 340376951
Test: adb shell /apex/com.android.virt/bin/vm run-microdroid --network-supported
Test: adb shell ifconfig

Change-Id: Ia9d4f196ce6e37192f106786ba4f3f2c6ee5a4e4
diff --git a/apex/vmnic.rc b/apex/vmnic.rc
index 486f387..f5dfd99 100644
--- a/apex/vmnic.rc
+++ b/apex/vmnic.rc
@@ -13,8 +13,8 @@
 # limitations under the License.
 
 service vmnic /apex/com.android.virt/bin/vmnic
-    user system
-    group system
+    user root
+    group vpn
     interface aidl android.system.virtualizationservice_internal.IVmnic
     disabled
     oneshot