supplicant(vts): Stop framework after querying package manager am: 2595661c am: 5fdc6b64 am: e91f0dfc

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

Change-Id: I9ccd69d61aaa7df8165494c8a6e2a32cc84db6da