Merge "Marking eth network management APIs @SystemApi" am: 6db38c75b0 am: b81bde5cd1 am: 3d646460e0

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1969839

Change-Id: I7fcc31256f02d3fd8c30f504942e6ea78338ffaf