WifiNetworkFactory: Handle network connection/failure

Handle network connection status from ClientModeImpl after user picks a
network.
Also, disconnect from the user selected network on network release.

Bug: 113878056
Test: ./frameworks/opt/net/wifi/tests/wifitests/runtests.sh
Change-Id: I0eddb69364733e03004c1fdcd6948ec920a07a7e
2 files changed