test/relay_network: do not add duplicate host ports
test/relay_network: do not add duplicate host ports

vanloswang/tchannel,savaki/tchannel,bunnyblue/tchannel,chenwenbin928/tchannel,i/tchannel,RyanTech/tchannel,hustxiaoc/tchannel,Zirpon/tchannel,Zirpon/tchannel,vanloswang/tchannel,RyanTech/tchannel,i/tchannel,RyanTech/tchannel,benfleis/tchannel,hustxiaoc/tchannel,chenwenbin928/tchannel,savaki/tchannel,savaki/tchannel,sasa233/tchannel,benfleis/tchannel,chenwenbin928/tchannel,sasa233/tchannel,i/tchannel,hustxiaoc/tchannel,benfleis/tchannel,sasa233/tchannel,Zirpon/tchannel,bunnyblue/tchannel,bunnyblue/tchannel,vanloswang/tchannel