Fixed misleading debug messages

The data network type of a NetworkInfo was incorrectly
set. Connectivity service debug messages were showing
incorrect network type which is misleading.

Fixed by using transport type to get the correct data
network type.

Test: Manual
Bug: 138660856
Merged-In: I717d1d736273cbbd2df39486b72e6954904f693c
Change-Id: I717d1d736273cbbd2df39486b72e6954904f693c
(cherry picked from commit 924c4bb2)