add get_date() to alert module
add get_date() to alert module

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