[WifiIOTTest] Make open_network and iperf_server optional
CHERRY PICKED FROM AOSP
1. Make iperf server optional to skip running iperf traffic if the setup
does not support it.
2. Since this tests inter-operability with multiple APs, we should
maintain a single auth type for APs. Make open_network optional for now.
Make all the APs to PSK based and remove open_network later.
Bug: 78099591
Test: Verified the changes
Change-Id: I18da79215cd1f49a393a8513ed1bb8e2df1698f2
Merged-In: Ie670447b494f57f26cbf227ef78663cea1db709e
1 file changed