Merge "Add admin user checking in MobileNetworkActivity"

import android.content.Intent;

import android.content.IntentFilter;

import android.os.Bundle;

import android.os.UserManager;

import android.provider.Settings;

import android.telephony.SubscriptionInfo;

import android.telephony.SubscriptionManager;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        final UserManager userManager = this.getSystemService(UserManager.class);

        if (!userManager.isAdminUser()) {

            this.finish();

        }

        if (FeatureFlagPersistent.isEnabled(this, FeatureFlags.NETWORK_INTERNET_V2)) {

            setContentView(R.layout.mobile_network_settings_container_v2);