Git commits in Moodle 3.2.7 by Adrian Greeve

commit 5124deed089ecd000b3c0e9989259d8a790d56ad
Author: Adrian Greeve <adrian@moodle.com>
Date:   Mon, 08 Jan 2018 08:36:47 +0800
Tag:    v3.2.7

MDL-61131 repositories: Added a key to verify incoming urls.