Merge "Let only Ethernet manage ethernet interface up and down" am: ac8445ca3b am: eb4a072814 am: 0d3aeb6139 am: 74698ef2a0

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1317394

Change-Id: I1bc40afe2fb72b312e493da6142fdd72e9321f84
tree: 17a1472abfcb915fbb6db29362819f628d15b338
  1. Tethering/