Merge "[Thread] add Thread tests to mts-tethering" into main am: 6c728aa1fa

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2927252

Change-Id: I06978b3793dbb2df2a6d2a6aa8bdcc921ed3bed3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>