CONFIGURED_NETWORKS_CHANGED_ACTION: stop sending WifiConfiguration and require ACCESS_WIFI_STATE permission

WifiConfiguration contains sensitive location
information. Stop sending this information in the
broadcast intent. Also require receivers to have
the ACCESS_WIFI_STATE permission.

Bug: 158874479
Test: Add logs locally in Settings to verify broadcast is received.
Test: Verify Settings still works correctly.
Test: atest FrameworksWifiTests
Change-Id: I657063f68701d57cfeb3765dfbab25ba50ef7b97

• service/java/com/android/server/wifi/WifiConfigManager.java[diff]
• tests/wifitests/src/com/android/server/wifi/WifiConfigManagerTest.java[diff]