[NETD-TC#11] Make TrafficController as libtraffic_controller into am: a9716ffcb8 am: 6c606d2771 am: 68c19f7ce2 am: 3031421366

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1945136

Change-Id: I7bff3700d9b1fa1e40d22a9321539671b86dc7ef