Git commits in Moodle 3.7.2 by Alistair Spark

commit 4b530e5af85a1d58fc213ab1080dc5e5e892d9eb
Author: Alistair Spark <aspark21@users.noreply.github.com>
Date:   Wed, 07 Aug 2019 07:01:27 +0800
Tag:    v3.7.2

MDL-66071 user: username is required with non-internal auth method