Handle alert rules with variable thresholds
Handle alert rules with variable thresholds

mrkeng/alerta,mrkeng/alerta,0312birdzhang/alerta,mrkeng/alerta,guardian/alerta,skob/alerta,skob/alerta,guardian/alerta,guardian/alerta,skob/alerta,skob/alerta,0312birdzhang/alerta,0312birdzhang/alerta,guardian/alerta,mrkeng/alerta