Merge "Mark EthernetManagerTest as @ConnectivityModuleTest" am: c2cbabf590

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2127855

Change-Id: I6a0772a840eca8d5d347600825bd1c05519da112
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>