Add hack/verify-spelling.sh script and Makefile target

hack/.spelling_failures

@@ -0,0 +1,6 @@
+BUILD
+CHANGELOG
+OWNERS
+go.mod
+go.sum
+vendor/

hack/tools.go

@@ -19,4 +19,7 @@ limitations under the License.
 // This package imports things required by build scripts, to force `go mod` to see them as dependencies
 package tools
 
-import _ "k8s.io/code-generator"
+import (
+	_ "github.com/client9/misspell/cmd/misspell"
+	_ "k8s.io/code-generator"
+)

hack/verify-spelling.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+# 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.
+
+# This script checks commonly misspelled English words in all files in the
+# working directory by client9/misspell package.
+# Usage: `hack/verify-spelling.sh`.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+KUBE_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
+export KUBE_ROOT
+source "${KUBE_ROOT}/hack/lib/init.sh"
+
+# Ensure that we find the binaries we build before anything else.
+export GOBIN="${OS_OUTPUT_BINPATH}"
+PATH="${GOBIN}:${PATH}"
+
+# Install tools we need
+pushd "${KUBE_ROOT}" >/dev/null
+  GO111MODULE=on go install github.com/client9/misspell/cmd/misspell
+popd >/dev/null
+
+# Spell checking
+# All the skipping files are defined in hack/.spelling_failures
+skipping_file="${KUBE_ROOT}/hack/.spelling_failures"
+failing_packages=$(sed "s| | -e |g" "${skipping_file}")
+git ls-files | grep -v -e "${failing_packages}" | xargs misspell -i "Creater,creater,ect" -error -o stderr