Get rid of hack/after-build scripts

The build is now fast enough to not need them.

hack/update-generated-protobuf-dockerized.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+# Copyright 2015 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.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
+source "${KUBE_ROOT}/hack/lib/init.sh"
+
+kube::golang::setup_env
+
+hack/build-go.sh cmd/libs/go2idl/go-to-protobuf cmd/libs/go2idl/go-to-protobuf/protoc-gen-gogo
+
+if [[ -z "$(which protoc)" || "$(protoc --version)" != "libprotoc 3.0."* ]]; then
+  echo "Generating protobuf requires protoc 3.0.0-beta1 or newer. Please download and"
+  echo "install the platform appropriate Protobuf package for your OS: "
+  echo
+  echo "  https://github.com/google/protobuf/releases"
+  echo
+  echo "WARNING: Protobuf changes are not being validated"
+  exit 1
+fi
+
+gotoprotobuf=$(kube::util::find-binary "go-to-protobuf")
+
+# requires the 'proto' tag to build (will remove when ready)
+# searches for the protoc-gen-gogo extension in the output directory
+# satisfies import of github.com/gogo/protobuf/gogoproto/gogo.proto and the core Google protobuf types
+PATH="${KUBE_ROOT}/_output/local/go/bin:${PATH}" \
+  "${gotoprotobuf}" \
+  --proto-import="${KUBE_ROOT}/vendor" \
+  --proto-import="${KUBE_ROOT}/third_party/protobuf"