Merge "Always wait for interface to be up in EthernetManagerTest" am: adf8f72856

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2062850

Change-Id: I4d2ad2c91da0c25ceeaba4a3221348caf244f0b2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>