Remove stale temporary ASEC containers

When a temporary container is created, its existence should be
ephemeral. However, if there is an error that causes system_server to be
killed during the process of creating a finalized ASEC, delete the stale
containers on the next start-up of system_server.

Change-Id: I7be8f94638a824295474c9a95960594848cb726b
1 file changed