Git commits in Moodle 3.5.13 by Matteo Scaramuccia

commit d2a670ec685e1bb024aca5ba5dda394d04929214
Author: Matteo Scaramuccia <moodle@matteoscaramuccia.com>
Date:   Thu, 11 Jun 2020 04:44:07 +0800
Tag:    v3.5.13

MDL-66322 travis: Configure a local copy of 'exttests'