Add a whitelist to control packages eligible for rollback (1/n)

The list will be used by RollbackManager to determine whether to enable
for given packages.

Bug: 144680850
Test: N/A. We will add tests when the feature is completed in RollbackManager.
Change-Id: I2d07449dbc652375f3d83e1649e32e546c12c262
1 file changed