Enable TrafficController in apex am: 216dfc82f6 am: 21da3ef1ba am: 456606a8f2 am: 362d66d606

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1966613

Change-Id: I9880a926447c83d4ec535072c1966240f82828da