Renaming Ethernet Network Management Classes am: 3ccf899bda am: 61f3143fdd am: 5b3af959c7

Original change: https://android-review.googlesource.com/c/platform/frameworks/opt/net/ethernet/+/1964753

Change-Id: I3af4c024690e6d67fa8f617aaabd94ef2ceb02e5
tree: 9eda3b86615018c0e12552a05904d5d8144b24cd
  1. service-t/
  2. tests/