Take away PeerState constructor branching
Take away PeerState constructor branching

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