DO NOT MERGE Stricter NetworkNotificationManagerTest

This patch changes NetworkNotificationManagerTest to populate extraInfo
of NetworkInfo in order to catch regressions in malformed format Strings
of log statements in NetworkNotificationManager.

Test: verified that the test fails when reintroducing the format String
bug.
Bug: 33737715

Change-Id: If14063554b8246d9d80cd222cb41c30dee121c5a