ci: testify on go 1.10 causing problem (#284)

Author: msohailhussain

.travis.yml

@@ -49,7 +49,7 @@ jobs:
         - mv $GOPATH/src/gopkg.in/yaml $GOPATH/src/gopkg.in/yaml.v2 && pushd $GOPATH/src/gopkg.in/yaml.v2  && git checkout v2.2.2 && popd
         - go get -v -d ./...
         # This pkg not in go 1.10
-        - go get github.com/stretchr/testify
+        - go get -d -v github.com/stretchr/testify
         - pushd $GOPATH/src/github.com/stretchr/testify && git checkout v1.4.0 && popd
         # -coverprofile was not introduced in 1.10
         - make test