Install kustomize in release workflow

.github/workflows/release.yml

@@ -11,6 +11,7 @@ jobs:
       uses: actions/checkout@v2
     - name: Install tools
       run: |
+        curl -s https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/hack/install_kustomize.sh | bash
         curl -L -O https://github.com/kubernetes-sigs/kubebuilder/releases/download/v2.2.0/kubebuilder_2.2.0_linux_amd64.tar.gz
         tar zxvf kubebuilder_2.2.0_linux_amd64.tar.gz
         sudo mv kubebuilder_2.2.0_linux_amd64 /usr/local/kubebuilder

Makefile

@@ -63,7 +63,7 @@ docker-push:
 	docker push ${NAME}:${VERSION}
 
 # Generate the release manifest file
-release:
+release: test
 	mkdir -p release
 	kustomize build config/default > release/actions-runner-controller.yaml