ADD: added new version of protobuf

libs/protobuf/kokoro/linux/cpp_distcheck/build.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+#
+# Build file to set up and run tests
+
+set -ex  # exit immediately on error
+
+# Change to repo root
+cd $(dirname $0)/../../..
+
+./tests.sh cpp_distcheck
+
+# Run tests under release docker image.
+DOCKER_IMAGE_NAME=protobuf/protoc_$(sha1sum protoc-artifacts/Dockerfile | cut -f1 -d " ")
+until docker pull $DOCKER_IMAGE_NAME; do sleep 10; done
+
+docker run -v $(pwd):/var/local/protobuf --rm $DOCKER_IMAGE_NAME \
+  bash -l /var/local/protobuf/tests.sh cpp || FAILED="true"
+
+# This directory is owned by root. We need to delete it, because otherwise
+# Kokoro will attempt to rsync it and fail with a permission error.
+rm -rf src/core
+
+if [ "$FAILED" = "true" ]; then
+  exit 1
+fi

libs/protobuf/kokoro/linux/cpp_distcheck/continuous.cfg

@@ -0,0 +1,5 @@
+# Config file for running tests in Kokoro
+
+# Location of the build script in repository
+build_file: "protobuf/kokoro/linux/cpp_distcheck/build.sh"
+timeout_mins: 1440

libs/protobuf/kokoro/linux/cpp_distcheck/presubmit.cfg

@@ -0,0 +1,5 @@
+# Config file for running tests in Kokoro
+
+# Location of the build script in repository
+build_file: "protobuf/kokoro/linux/cpp_distcheck/build.sh"
+timeout_mins: 1440