ZhiQiang Fan 63b2f0716d support time to live on event database for sql backend
This is a following patch to I0d67cf212f37d3fa5555870a8e7cbb65af205d63

Change-Id: I143136466c8958e9506bea076fa0bdb8320238ba
implements blueprint event-database-ttl
2015-02-25 16:06:13 +08:00
..
2015-01-23 17:43:04 +01:00