Solve the infinite loop on clearExternalStorageDataSync

5000 msec timeout is set for waiting DefaultContainerService, but
it's not working. It's not possible to exit a wait loop even if it
takes over 5000 msec.

Bug: 29232999

Change-Id: I74a45637e0a3fa5a7b151e6b3dc0b3aaece96d53