Merge "Don't run EthernetTetheringTest if Ethernet is not supported" am: df41b36fc9

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2646401

Change-Id: I029786cf9a7d159c90093f2f81f0e917b3361420
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>