gordon chung 4fd6ab0516 cleanup problem events logic in event db storage
when an error occurs in event storage, we capture the errors and
related events but do nothing with it. this patch logs corresponding
errors and raises it if the error is unknown so that dispatcher
can requeue payload.

Change-Id: Id2493b8073646cad9dece626937c8e8af96e1e43
2015-05-07 14:50:52 +00:00
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