Grant shell permissions for Airplane Mode to Shell to support CTS

New permission is needed to allow CTS to trigger the new WiFi subsystem
restart API.

Bug: 175084231
Test: atest android.net.wifi.cts.WifiManagerTest#testRestartWifiSubsystem
Change-Id: Id844fb799c61f65580e686d1da7ec38a62dd01d0
2 files changed