supplicant(vts): Stop framework after querying package manager am: 2595661c0d am: 5fdc6b6469 am: 151d5953eb

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

Change-Id: Ida35ebfd3badeb9d139ad96a37b096dffe0f38ca