Merge pull request #3227 from radTuti/master

update kustomize download script

hack/install_kustomize.sh

@@ -10,11 +10,11 @@
 #
 # Fails if the file already exists.
 
+release_url=https://api.github.com/repos/kubernetes-sigs/kustomize/releases
+
 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)
+    release_url=${release_url}/tags/kustomize%2F$version
 fi
 
 where=$PWD
@@ -38,18 +38,18 @@ trap cleanup EXIT
 pushd $tmpDir >& /dev/null
 
 opsys=windows
+arch=amd64
 if [[ "$OSTYPE" == linux* ]]; then
   opsys=linux
 elif [[ "$OSTYPE" == darwin* ]]; then
   opsys=darwin
 fi
 
-curl -s https://api.github.com/repos/kubernetes-sigs/kustomize/releases |\
-  grep browser_download |\
-  grep $opsys |\
+curl -s $release_url |\
+  grep browser_download.*${opsys}_${arch} |\
   cut -d '"' -f 4 |\
-  grep /kustomize/$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