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

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

Change-Id: I91d1775c9c8d1d66cbd1c235f8ed7de5ac2afc28