Merge "Making EthernetNetworkSpecifier public" am: d13094cef4

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1971181

Change-Id: Ifce3d11a0e0e997924bd431c9208bf8c6a95cba8
tree: 17a37151fc4662e19c1ed6caa88e013e33eb1deb
  1. framework/
  2. framework-t/
  3. service-t/
  4. services/
  5. tests/