Tool for updating test-infra in other repos (knative#772)

hack/update-test-infra.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+
+# Copyright 2019 The Knative 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
+
+echo
+echo "This script updates the vendored test-infra in all Knative repos,"
+echo "creating commits for each one of them. The PRs must still be created"
+echo "through GitHub UI (just open the link given at the end of the process)."
+echo "This script expects the Knative repositories to be located under"
+echo "\$GOPATH/src/github.com/knative (as instructed by the development docs)."
+
+cd ${GOPATH}
+cd src/github.com/knative
+
+for repo in *; do
+  [[ "${repo}" == "test-infra" ]] && continue
+  cd ${repo}
+  echo -e "\n\n**** Updating test-infra in knative/${repo} ***\n\n"
+  branch="update-test-infra-$(basename $(mktemp))"
+  git checkout master
+  git remote update -p
+  git pull
+  git checkout -b ${branch} upstream/master
+  dep ensure -update github.com/knative/test-infra
+  ./hack/update-deps.sh
+  [[ -z "$(git diff)" ]] && continue
+  git commit -a -m "Update test-infra to the latest version"
+  git push -u origin ${branch}
+  echo -e "\nCheck the PR created above, and make changes if necessary"
+  echo -n "Hit [ENTER] to continue..."
+  read
+  cd ..
+done