Merge "Add connectivity coverage tests" am: cc79d7c0f8 am: 68114fe408 am: 3d25f6e8a7

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1731232

Change-Id: Ie9549d26fc4f1246e8959e326d2bd6f834bf222c