Allow installd sufficient permissions to rollback_data_file.

Used to capture and restore app data snapshots as implemented in change
I3e4d36c11e52fb885b585b1946e215cf986206fd.

Test: make, manual
Bug: 112431924

Change-Id: I1cd1ec3f9c93c4af65b662a5ada582299b595a8f
1 file changed