carto/protobuf @ php-generated-dev

Yilun Chong c3566c6861 Fix python install, cat java error log for kokoro build		%!s(int64=7) %!d(string=hai) anos
..
linux	c3566c6861 Fix python install, cat java error log for kokoro build	%!s(int64=7) %!d(string=hai) anos
macos	204a6413d6 Move kokoro macOS builds to to Xcode 9.1.	%!s(int64=7) %!d(string=hai) anos
README.md	6156af10e8 Add MacOS and Linux tests to Kokoro	%!s(int64=8) %!d(string=hai) anos

Kokoro Infrastructure

The files in this directory serve as plumbing for running Protobuf tests under Kokoro, our internal CI.