Add metric request timeout to alert ganglia
Add metric request timeout to alert ganglia

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