[automerger skipped] Set up and tear down test network in TestNetworkRunnable am: 144ae3c76a -s ours

am skip reason: Merged-In I0e08a6ea299e6ad94d69806a2d76fa155653b62a with SHA-1 29487b12d5 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/14988700

Change-Id: I8e3e012a0cb14012e025ba5d2e0efa416b1d3c1e