[automerger skipped] Set up and tear down test network in TestNetworkRunnable am: 144ae3c76a am: b44d08eece -s ours

am skip reason: Merged-In I0e08a6ea299e6ad94d69806a2d76fa155653b62a with SHA-1 144ae3c76a is already in history

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

Change-Id: Iaf466a4446aeecf34ea54dbbe5fe56df596f02bd