aggregation-rules.conf中的表达式配置：
test.<app>.all.<metrics>count (10) = sum test.<app>.ip*.<<metrics>>count
正确！
test.<app>.all.<metrics>count (10) = sum test.<app>.*.<<metrics>>count
will be fail into loop forever!!!!!
aggregation-rules.conf中的表达式配置：
test.<app>.all.<metrics>count (10) = sum test.<app>.ip*.<<metrics>>count
正确！
test.<app>.all.<metrics>count (10) = sum test.<app>.*.<<metrics>>count
will be fail into loop forever!!!!!
