Fix querying Ethernet availability for unprivileged callers. am: bc7ff5d89f am: 6b4862dfc8

Change-Id: I3004ec6456f68f9423d11009bdc7df51132cc155
tree: 497098f83761ff7aaa565fc8e6207dd2ee411dc4
  1. service-t/
  2. tests/