include k8s.io/api in update-godep-staging.sh

hack/update-staging-godeps.sh

@@ -79,10 +79,6 @@ function updateGodepManifest() {
 # move into staging and save the dependencies for everything in order
 mkdir -p "${TMP_GOPATH}/src/k8s.io"
 for repo in $(ls ${KUBE_ROOT}/staging/src/k8s.io); do
-  # we have to skip api because it does not depend on anything
-  if [ "${repo}" == "api" ]; then
-    continue
-  fi
   # we skip metrics because it's synced to the real repo manually
   if [ "${repo}" == "metrics" ]; then
     continue