Update netpolicy tests to not assume DUT will be plugged-in.

Bug: 73037837
Bug: 72656089
Test: cts-tradefed run singleCommand cts-dev -m CtsHostsideNetworkTests -t \
      com.android.cts.net.HostsideRestrictBackgroundNetworkTests

Change-Id: I79aaaf083255626896901fcfdade70b4705cfc06
2 files changed
tree: b24b03fc7e015055c0739b72750f174baf943809
  1. tests/