Vendor dependencies for GCS

vendor/cloud.google.com/go/internal/kokoro/build.sh

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+#!/bin/bash
+
+# Fail on any error
+set -eo pipefail
+
+# Display commands being run
+set -x
+
+# cd to project dir on Kokoro instance
+cd git/gocloud
+
+go version
+
+# Set $GOPATH
+export GOPATH="$HOME/go"
+GOCLOUD_HOME=$GOPATH/src/cloud.google.com/go
+mkdir -p $GOCLOUD_HOME
+
+# Move code into $GOPATH and get dependencies
+cp -R ./* $GOCLOUD_HOME
+cd $GOCLOUD_HOME
+go get -v ./...
+
+# # Don't run integration tests until we can protect against code from 
+# # untrusted forks reading and storing our service account key.
+# cd internal/kokoro
+# # Don't print out encryption keys, etc
+# set +x
+# key=$(cat $KOKORO_ARTIFACTS_DIR/keystore/*_encrypted_ba2d6f7723ed_key)
+# iv=$(cat $KOKORO_ARTIFACTS_DIR/keystore/*_encrypted_ba2d6f7723ed_iv)
+# pass=$(cat $KOKORO_ARTIFACTS_DIR/keystore/*_encrypted_ba2d6f7723ed_pass)
+
+# openssl aes-256-cbc -K $key -iv $iv -pass pass:$pass -in kokoro-key.json.enc -out key.json -d
+# set -x
+
+# export GCLOUD_TESTS_GOLANG_KEY="$(pwd)/key.json"
+# export GCLOUD_TESTS_GOLANG_PROJECT_ID="dulcet-port-762"
+# cd $GOCLOUD_HOME
+
+# Run tests and tee output to log file, to be pushed to GCS as artifact.
+go test -race -v -short ./... 2>&1 | tee $KOKORO_ARTIFACTS_DIR/$KOKORO_GERRIT_REVISION.log
+
+# Make sure README.md is up to date.
+make -C internal/readme test diff