Merge "Mark EthernetManagerTest as @ConnectivityModuleTest" am: c2cbabf590 am: 8b8120b1a7

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

Change-Id: I907a5d1602cb6b275b435eaf9c467787fa70b4c8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>