Set apex_available property am: daaa32d0a3 am: 469a144f91 am: 8022494fa0 am: 46202a0a2c

Original change: https://android-review.googlesource.com/c/platform/system/libhidl/+/1432872

Change-Id: Ib35e44c6e087446eb752cf3c5a106ddebbbd13b0