adding go-junit-report install

Author: krzysied

hack/jenkins/benchmark-dockerized.sh

@@ -34,6 +34,7 @@ retry() {
 export PATH=${GOPATH}/bin:${PWD}/third_party/etcd:/usr/local/go/bin:${PATH}
 
 go install k8s.io/kubernetes/vendor/github.com/cespare/prettybench
+go install k8s.io/kubernetes/vendor/github.com/jstemmer/go-junit-report
 
 # Disable the Go race detector.
 export KUBE_RACE=" "