Merge "Marking test receiver as exported." am: 0762151207 am: 0f0e611a05 am: 490315c3fd am: e735f8a5ea

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1971399

Change-Id: Ib551ecebcd4c3c4e1733d4149e497692fb52a4ae