Change the INTERNET permission implementation so it only block socket
creation when non of the packages under the same uid have internet
permission. Fix the UPDATE_DEVICE_STATS permission so only the uid that
own the permission can change it.
Bug: 111560570
Test: CtsNetTestCasesUpdateStatsPermission
CtsNetTestCasesInternetPermission
Change-Id: I42385526c191d4429f486cde01293b27fcc1374b