Add JSON test which calls in a chain.
Add JSON test which calls in a chain.

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