[automerger skipped] Add more unit tests for ConnectivityManager S APIs am: 92c29c56d7 am: 6c5bd7dfec -s ours

am skip reason: Merged-In I3c2563d4ae4e3715d0c6270344ba8f7ef067872f with SHA-1 2afd0986d3 is already in history

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1744644

Change-Id: I0266a9d85877d0afc673f2a517a2c8ab8208284e