chore: add changelog to cloud-rad (#212)
chore: add changelog to cloud-rad (#212)

Source-Author: Emily Ball <9fe61a4aacf035e9f06745e509f03712e2d9e90e@google.com>
Source-Date: Mon May 17 09:54:56 2021 -0700
Source-Repo: googleapis/synthtool
Source-Sha: c86c7a60985644eab557949363a38301d40d78d2
Source-Link: https://github.com/googleapis/synthtool/commit/c86c7a60985644eab557949363a38301d40d78d2
googleapis/google-cloud-java,googleapis/google-cloud-java,googleapis/google-cloud-java