Git commits in Moodle 3.1.16 by Jun Pataleta

commit d2df0daf5bd4aab9e69cfe0f55d6e18f8e0a1e40
Author: Jun Pataleta <jun@moodle.com>
Date:   Fri, 30 Nov 2018 14:55:54 +0800
Tag:    v3.1.16

MDL-64285 core: Fix environment check test