Add build target for just building the dependencies of kubebuilder.

Author: pwittrock

build/cloudbuild_tools.yaml

@@ -0,0 +1,25 @@
+#  Copyright 2018 The Kubernetes Authors.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+steps:
+- name: "gcr.io/kubebuilder/thirdparty-${_GOOS}:1.9"
+  args: ["cp", "/kubebuilder_${_GOOS}_${_GOARCH}.tar.gz", "/workspace/kubebuilder-${TAG_NAME}-${_GOOS}-${_GOARCH}.tar.gz"]
+  env:
+  - 'GOOS=${_GOOS}'
+  - 'GOARCH=${_GOARCH}'
+- name: 'gcr.io/cloud-builders/gsutil'
+  args: ['-h', 'Content-Type:application/gzip', 'cp', '/workspace/kubebuilder-${TAG_NAME}-${_GOOS}-${_GOARCH}.tar.gz', 'gs://kubebuilder-tools/kubebuilder-${TAG_NAME}-${_GOOS}-${_GOARCH}.tar.gz']
+  env:
+  - 'GOOS=${_GOOS}'
+  - 'GOARCH=${_GOARCH}'