Merge pull request #7256 from phosae/phosae-make-kubemark-bin

improve kubemark binary building

Author: k8s-ci-robot

contributors/devel/sig-scalability/kubemark-setup-guide.md

@@ -24,7 +24,8 @@ git clone [email protected]:kubernetes/kubernetes.git
 - ii. build kubemark binary 
 
 ```
-./hack/build-go.sh cmd/kubemark/
+cd kubernetes
+make all WHAT=cmd/kubemark
 cp $GOPATH/src/k8s.io/kubernetes/_output/bin/kubemark $GOPATH/src/k8s.io/kubernetes/cluster/images/kubemark/
 ```