supplicant/hostapd(vts): Test for terminate

This HIDL API is meant to terminate the HIDL service. On Pixel devices,
terminate will trigger the death of the corresponding daemon.
But, other OEM's may choose to do something else.

Bug: 71613595
Bug: 71613528
Test: Ran the VTS tests
Change-Id: I737458b5c49ecd5545be0dc7033092db9a35b089