s/query_key/aggregation_key/ in the info log messages during add_aggregated_alert
s/query_key/aggregation_key/ in the info log messages during add_aggregated_alert

dvopsway/elastalert,jetyang2005/elastalert,jetyang2005/elastalert,rprabhat/elastalert,jetyang2005/elastalert,Yelp/elastalert