Never create native network immediately.

This patch flags off the functionality added by aosp/2162425
in the wake of b/286649301 where a race in ConnectivityService
breaks WiFi connectivity until reboot.

Bug: 286649301
Test: NetworkAgentTest
      ConnectivityServiceTest
(cherry picked from https://android-review.googlesource.com/q/commit:a16607f421ecfbf37ef8fb2fa96d4d285df9e77b)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:1214b906463106d5a77f2da9a8bc49ddd868bd40)
Merged-In: I96d755445f6e1f88bb71a7d32742e87dae185250
Change-Id: I96d755445f6e1f88bb71a7d32742e87dae185250
2 files changed