WifiConfigManager: protect CONFIGURED_NETWORKS_CHANGED_ACTION with permissions

Guard with ACCESS_WIFI_STATE & ACCESS_FINE_LOCATION permissions.

Bug: 158874479
Bug: 159373687
Test: presubmit unit tests
Test: Verify Settings still works correctly.

Change-Id: I88d93006ff379105e13e1b339ec51757a56ac863
Merged-In: I88d93006ff379105e13e1b339ec51757a56ac863
Merged-In: I657063f68701d57cfeb3765dfbab25ba50ef7b97
2 files changed