supplicant(vts): Stop framework after querying package manager am: 2595661c...

supplicant(vts): Stop framework after querying package manager am: 2595661c am: 5fdc6b64 am: 5b07a6be am: 1eb93312

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

Change-Id: I9cef38e6c9c86fadb47046e20ba0c65e77559a74