Merge "EthernetTetheringTest: add testTetherClatTcp" am: e729389bd2

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2219565

Change-Id: Ib7b4a804fdfb9225da5995305450f9cf988a0517
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>