on Q startCaptivePortalApp was guarded by CONNECTIVITY_INTERNAL instead
of NETWORK_SETTINGS: change the permission adopted by shell on Q to
match the platform.
Test: atest CaptivePortalTest on a Q device
Bug: 150904735
Original-Change: https://android-review.googlesource.com/1316081
Merged-In: I24b6907d164aba07df0f5a1a3715669e99cddd88
Change-Id: I24b6907d164aba07df0f5a1a3715669e99cddd88