Merge "Revert "Delete VPN methods in ConnectivityManager."" am: 7096deadf4 am: d88a8d2036 am: aa2b03ecea

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1596592

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I9d80ea1c572a3eec58a67b0d7c4faa79b30c206a