vts(wifi): Stop wifi fully instead of stopping framework am: 87423904 am:...

vts(wifi): Stop wifi fully instead of stopping framework am: 87423904 am: 356437d4 am: eff16962

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/15847168

Change-Id: Ifbfa24309129a3c993f0a20d0581d895319a5d32