fix bug of parsing wrong hostname from spark master
fix bug of parsing wrong hostname from spark master

cemsbr/HiBench,qiansl127/HiBench,cemsbr/HiBench,nareshgundla/HiBench,ConeyLiu/HiBench,nareshgundla/HiBench,eriknor/HiBench,eriknor/HiBench,cemsbr/HiBench,eriknor/HiBench,qiansl127/HiBench,ConeyLiu/HiBench,eriknor/HiBench,maismail/HiBench,ConeyLiu/HiBench,maismail/HiBench,nareshgundla/HiBench,maismail/HiBench,qiansl127/HiBench,cemsbr/HiBench,qiansl127/HiBench,maismail/HiBench,ConeyLiu/HiBench,nareshgundla/HiBench