Add PACKAGE_USAGE_STATS permission to CTS tests

Now that the PACKAGE_USAGE_STATS permission is properly associated with
the GET_USAGE_STATS app op, an app must request the permission, in order
to be granted the app op.

Fixes: 243572246
Test: atest NetworkStatsManagerTest
Change-Id: I42b22ca5d637accaa413b1c8b3dbb785c827a81b
1 file changed