supplicant(vts): Stop framework after querying package manager am: 2595661c0d am: 5fdc6b6469 am: e91f0dfc8b am: a8b07aeca6 am: 0ec778ce8e

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

Change-Id: I565867e4fbb7c2f1519d4618a3b52295face3806