Update go version in automation script
Update go version in automation script

Kubernetes api machinery only support go 1.8 onwards anymore. Update the
CI go version from 1.7 to 1.9.

Signed-off-by: Travis CI <e6cc0fb2b8dad4110ef62e9a33e5a8aa4e0f86d7@travis-ci.org>

davidvossel/kubevirt,davidvossel/kubevirt,fabiand/kubevirt,stu-gott/kubevirt,stu-gott/kubevirt,rmohr/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,davidvossel/kubevirt,stu-gott/kubevirt,rmohr/kubevirt,kubevirt/kubevirt,davidvossel/kubevirt,fabiand/kubevirt,kubevirt/kubevirt