Revert "Revert "Prevent side channel package installation enumeration""

This reverts commit ee8365ca8e46a835a561eab82794f29feaee8a08.

Reason for revert: <The breaked gts test b/213434244 is fixed by ag/16578964>

Change-Id: I2ddf20646b55e5833d3026bcbda308e2036780d9
1 file changed