Add script to verify CRD generation

Issue #6892

hack/verify-generate.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env 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.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+KOPS_ROOT=$(git rev-parse --show-toplevel)
+cd "${KOPS_ROOT}"
+
+make crds
+
+changed_files=$(git status --porcelain || true)
+if [ -n "${changed_files}" ]; then
+   echo "Detected that generation is needed; run 'make crds'"
+   echo "changed files:"
+   printf "${changed_files}\n"
+   echo "git diff:"
+   git --no-pager diff
+   echo "To fix: run 'make crds'"
+   exit 1
+fi
+