Fix for travis build
Fix for travis build

tchannel folder now contains:
1) package tchannel production code
2) package tchannel test code in *_test.go
3) package tchannel_test tests in *_test.go

2) is required so tests can access internal state in tchannel
3) is so tests can use other packages (eg raw/ json/ testutils/)
   without circular dependencies

make test was failing when running "go test ." the tchannel_test
tests import tchannel from the Godeps workspace, and since
this is a separate directory, files in 2) were not being compiled.

To fix this, we have to make sure that the tests import from
the exact path as where the tests are, so we now run tests
from the godep directory directly

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