TestStreamSearch: factor out #setupCluster
TestStreamSearch: factor out #setupCluster

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