Andrew Nicols 4b55982446 MDL-61204 user: Fix random failure in behat
We need to get into the habit of not using usernames like 'student1'
and 'student10' as our matches are non-strict, and the tests become
dependent upon DB sort order.

This change adds a character after the varying value to act as a
delimter for all of these tests.
2018-01-12 09:35:56 +08:00
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