Make Ethernet interfaces more testable.

This CL adds a setIncludeTestInterfaces method to EthernetManager
that, when called, causes the Ethernet service to recognize and
manage test interfaces created by TestNetworkManager.

Bug: 150644681
Test: Tested by EthernetTetheringTest in same topic
Change-Id: I86eef7a93267f800dbfc8eafd307effa76a344ca
Merged-In: I86eef7a93267f800dbfc8eafd307effa76a344ca
(cherry picked from commit 4978dbd5fb6592fc4e7be08d02783752245da634)
2 files changed
tree: a02713025e69b8de6354fed91802b443f648442c
  1. service-t/
  2. tests/