Add more preference controllers to network page.

- To support Mobile plan preference controller, extended
  LifecycleObserver pattern to also observe onCreate and onSaveInstance.

Bug: 31799836
Test: RunSettingsRoboTests
Change-Id: Ie98db7efa91f0a8b4c8a06a784d3351237e59fe0

src/com/android/settings/network/MobileNetworkPreferenceController.java

@@ -46,9 +46,9 @@ public class MobileNetworkPreferenceController extends PreferenceController {
 
     @Override
     protected boolean isAvailable() {
-        return mIsSecondaryUser
-                || Utils.isWifiOnly(mContext)
-                || hasBaseUserRestriction(mContext, DISALLOW_CONFIG_MOBILE_NETWORKS, myUserId());
+        return !mIsSecondaryUser
+                && !Utils.isWifiOnly(mContext)
+                && !hasBaseUserRestriction(mContext, DISALLOW_CONFIG_MOBILE_NETWORKS, myUserId());
     }
 
     @Override