Merge pull request #28903 from thockin/run-in-gopath

Automatic merge from submit-queue

Fix build for non-GOPATH users

I want feedback on this.  There are 2 commits here, we should probably only do one of them.  The release note will depend on which one we choose.  Also docs need update.

Fixes #28890
Fixes #28987

hack/run-in-gopath.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+# Copyright 2016 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.
+
+# This script sets up a temporary Kubernetes GOPATH and runs an arbitrary
+# command under it.  Go tooling requires that the current directory be under
+# GOPATH or else it fails to find some things, such as the vendor directory for
+# the project.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
+source "${KUBE_ROOT}/hack/lib/init.sh"
+
+# This sets up a clean GOPATH and makes sure we are currently in it.
+kube::golang::setup_env
+
+# Run the user-provided command.
+"${@}"