Implementation of Eth Service updateConfiguration am: 7f0823c15f

Original change: https://android-review.googlesource.com/c/platform/frameworks/opt/net/ethernet/+/1935157

Change-Id: I0b94033e9b3af4492b39b2efdc9e200ee9b2e158
tree: ae91358392d113d6c82ab159d8490ab7263df7a1
  1. service-t/
  2. tests/