Treble compliance.
Bug: 70228425
Bug: 70393317
Test: complete wifi test in b/70393317
Test: Test wifi on Taimen and Sailfish
Test: verify sockets exist in /data/vendor/wifi/wpa/sockets
Change-Id: I0bfc3a351419f0a03498e79664949f353369bf1b
* Mounting /system and /vendor partitions is handled in kernel now,
however removing the entries from fstab caused issues building
the OTA. The workaround was to have a separate fstab, but turns out
that simply setting the recoveryonly flag does the trick because
those are then ignored during a normal Android boot.
Change-Id: I2944384d0a1c41bc9f9f51e2e29daff2bed0a0f4