Connectivity metrics: add transports to validation probes

This patch adds transports info to ValidationProbeEvent and migrates
netId logging for this event to the topt-level netId field in
ConnectivityMetricsEvent.

Test: modified unit tests. $ runtest frameworks-net passes
Bug: 3490169
Change-Id: Ibf51049ba8901ae5ca4ea86e2f500944a4738b5c
3 files changed
tree: 0d1eccccc7a970e5e3c32c3bc7f4483c68bc4066
  1. core/
  2. services/
  3. tests/