tree ef6fd7b3e5e23b5a6cbf3149f50c0238c6db8905
parent 55786f0b61804210cb8ab34d781a968bc0077176
author Nguyen Tuan Khang Phan <nguyen.tuan.khang.phan@ericsson.com> 1580136029 -0500
committer Nguyen Tuan Khang Phan <nguyen.tuan.khang.phan@ericsson.com> 1580150830 -0500

Add an empty tools/BUILD file explicitly for Bazel

To make sure that all plugins consistently have empty BUILD files
within their tools.

Change-Id: Ib803b6ef913119bd8fbe913ca1284478894c791b