Merge "Always wait for interface to be up in EthernetManagerTest" am: adf8f72856 am: 7cc696eb1b

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

Change-Id: I28c60909f879ccd8217545a21888dae40bf264ee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>