Merge "Add a test for starting the legacy VPN." am: 20c118c89d

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1372896

Change-Id: I31352ae32ddeba4a37cc37bdcf6d7568f63fd70a
tree: ff15974e33391fe4369e7812c5f86c63ca1a249f
  1. core/
  2. services/
  3. tests/