Merge commit '36bca61764984ff5395653cf8377ec5daa71b709' as 'libs/protobuf'

libs/protobuf/kokoro/linux/aarch64/test_cpp_aarch64.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+#
+# Crosscompiles protobuf C++ under dockcross docker image and runs the tests under an emulator.
+
+set -e
+
+# go to the repo root
+cd $(dirname $0)/../../..
+
+# Initialize any submodules.
+git submodule update --init --recursive
+
+# run the C++ build and test script under dockcross/linux-arm64 image
+kokoro/linux/aarch64/dockcross_helpers/run_dockcross_linux_aarch64.sh kokoro/linux/aarch64/cpp_crosscompile_and_run_tests_with_qemu_aarch64.sh