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

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

Change-Id: I25cd3c47ab5dbf588b5af5c698cafcca4027f6d5