Fix CI (#1550)

Accidently removed the check-gofmt.sh script.

script/check-gofmt.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+# Copyright 2017 The Kubernetes Authors All rights reserved.
+#
+# 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 checks if all go source files in current directory are format using gofmt
+
+GO_FILES=$(find . -path ./vendor -prune -o -name '*.go' -print )
+
+for file in $GO_FILES; do
+	gofmtOutput=$(gofmt -l "$file")
+	if [ "$gofmtOutput" ]; then
+		errors+=("$gofmtOutput")
+	fi
+done 
+
+
+if [ ${#errors[@]} -eq 0 ]; then
+	echo "gofmt OK"
+else
+	echo "gofmt ERROR - These files are not formatted by gofmt:"
+	for err in "${errors[@]}"; do
+		echo "$err"
+	done
+	exit 1
+fi