wifi(implementation): Unit tests for V1 & V2 iface combos

Unit tests for all the iface combos supported in V1 (2016 devices) & V2
(2017 devices).

Bug: 68775880
Test: ./hardware/interfaces/wifi/1.2/default/tests/runtests.sh
Change-Id: I1049176aabdf936d442d022b5915129010ce7387