Move FrameworksVpnTests to presubmit am: ed85cfa4c3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/26484244

Change-Id: I5d298e517e1b4440293da3d4d109c4668b415b31
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>