supplicant(vts): Stop framework after querying package manager am: 2595661c0d am: 5fdc6b6469 am: 5b07a6bef3 am: 1eb933123b am: add611e8e0

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/12351743

Change-Id: I5da209a4a2d44cde69ec74bf2fc7c62decaa9fca