fix latest release download failure

hack/install_kustomize.sh

@@ -12,9 +12,6 @@
 
 if [ -n "$1" ]; then
     version=v$1
-  else
-    version=$(curl -sL -o /dev/null -w %{url_effective} \
-    https://github.com/kubernetes-sigs/kustomize/releases/latest | rev | cut -d/ -f1 | rev)
 fi
 
 where=$PWD
@@ -49,7 +46,8 @@ curl -s https://api.github.com/repos/kubernetes-sigs/kustomize/releases |\
   grep $opsys |\
   cut -d '"' -f 4 |\
   grep /kustomize/$version.*amd64 |\
-  sort | xargs curl -sLO
+  sort | tail -n 1 |\
+  xargs curl -sLO
 
 if [ -e ./kustomize_v*_${opsys}_amd64.tar.gz ]; then
     tar xzf ./kustomize_v*_${opsys}_amd64.tar.gz