Merge "[Thread] add ThreadNetworkUnitTests to postsubmit" into main am: 474abf134e

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2819757

Change-Id: Ifbc78301cbba5e167103b94adf978d1432ba90b3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>