Git commits in Moodle 3.6.8 by Jake Dallimore

commit d20bd99b07d94f44322000515fe3dff408fabe94
Author: Jake Dallimore <jake@moodle.com>
Date:   Fri, 03 Jan 2020 11:25:14 +0800
Tag:    v3.6.8

weekly release 3.6.7+

commit 98f33548d42b26ce85bd3f9ca48d9b9ffcd76b10
Author: Jake Dallimore <jake@moodle.com>
Date:   Thu, 02 Jan 2020 10:28:14 +0800
Tag:    v3.6.8

MDL-67599 behat: fix behat tests assuming Jan 2020 is a future date

commit 668cba6e7ebe1c225fb139d981d41cce7be52a81
Author: Jake Dallimore <jake@moodle.com>
Date:   Tue, 31 Dec 2019 15:31:11 +0800
Tag:    v3.6.8

MDL-67593 core_iplookup: update lang string describing download process

commit 2bc8f72dffa8c526dad2587acb8d9b3f138c3c80
Author: Jake Dallimore <jake@moodle.com>
Date:   Tue, 31 Dec 2019 14:38:50 +0800
Tag:    v3.6.8

MDL-67593 core_iplookup: use MaxMind test database in unit tests