Add a VpnTransportInfo object.

This currently stores the VPN type and a session name, but can be
extended in the future.

Bug: 173331190
Test: added coverage in VpnTest
Test: added coverage in ConnectivityServiceTest
Test: added coverage in NetworkAgentTest
Change-Id: I450858a9fa332c8d896dbdb4c14337d5ec23677f
7 files changed
tree: dd8592f9f05b97422bd566954abd69a8a4048f0a
  1. core/
  2. framework/
  3. service/
  4. services/
  5. tests/
  6. OWNERS