Switch to k8s.io/code-generator script

Signed-off-by: Andy Goldstein <andy.goldstein@gmail.com>

hack/update-generated-crd-code.sh

@@ -0,0 +1,26 @@
+#!/bin/bash -e
+#
+# Copyright 2017 the Heptio Ark contributors.
+#
+# 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.
+
+HACK_DIR=$(dirname "${BASH_SOURCE}")
+REPO_ROOT=${HACK_DIR}/..
+
+${REPO_ROOT}/vendor/k8s.io/code-generator/generate-groups.sh \
+  all \
+  github.com/heptio/ark/pkg/generated \
+  github.com/heptio/ark/pkg/apis \
+  ark:v1 \
+  --go-header-file hack/boilerplate.go.txt \
+  $@