Andrew Zaborowski authored Feb 21, 2018 and Andrew Zaborowski committed Mar 05, 2018

Remove the code (mostly copied from nm-device-wifi.c) that handles
checking if the secrets were provided and requesting missing secrets
before starting a connection attempt.  Instead, request secrets when
we're asked for them by IWD through its agent interface.  This happens
while the dbus Connect call is running.  We change the NMDevice from
the CONFIG state to NEED_AUTH and then change back to CONFIG once we
sent the secrets back to IWD.

The current code would require the secrets only based on whether a
network is a KnownNetwork but IWD may need a new passwords even for
KnownNetworks if the last connection attempt has failed.