Bumping k8s dependencies to 1.13

vendor/golang.org/x/tools/cmd/godoc/cloudbuild.yaml

@@ -0,0 +1,25 @@
+# Copyright 2018 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+# NOTE(cbro): any changes to the docker command must also be
+# made in docker-build in the Makefile.
+#
+# Variable substitutions must have a preceding underscore. See:
+# https://cloud.google.com/cloud-build/docs/configuring-builds/substitute-variable-values#using_user-defined_substitutions
+steps:
+- name: 'gcr.io/cloud-builders/docker'
+  args: [
+    'build',
+    '-f=cmd/godoc/Dockerfile.prod',
+    '--build-arg=GO_REF=${_GO_REF}',
+    '--build-arg=TOOLS_HEAD=${_TOOLS_HEAD}',
+    '--build-arg=TOOLS_CLEAN=${_TOOLS_CLEAN}',
+    '--build-arg=DOCKER_TAG=${_DOCKER_TAG}',
+    '--build-arg=BUILD_ENV=cloudbuild',
+    '--tag=${_DOCKER_TAG}',
+    '.',
+  ]
+images: ['${_DOCKER_TAG}']
+options:
+  machineType: 'N1_HIGHCPU_8' # building the godoc index takes a lot of memory.