Improved debug messages

USed the same network ID provided by connectivity
service in DC network agent instead of using its own
id.

Test: Manual

Merged-In: I87b58a905373bfa4baa44c1fe948610c54feaed6
Change-Id: I87b58a905373bfa4baa44c1fe948610c54feaed6
(cherry picked from commit fa869f4f)