Use validate_cert when accessing Graphite (#111)
Use validate_cert when accessing Graphite (#111)

Currently validate_cert is only used in URLAlert, but not in GraphiteAlert. This change will reuse the same variable when connecting to Graphite server.
klen/graphite-beacon,fried-sausage/graphite-beacon,fried-sausage/graphite-beacon,klen/graphite-beacon,fried-sausage/graphite-beacon,klen/graphite-beacon