[TASK] Add beuser tests to testsuites

This will make travis execute EXT:beuser tests

Change-Id: I7f36de56ee4ff6586bc9daf1dbc0099b92c84826
Resolves: #40217
Releases: 6.0
Reviewed-on: http://review.typo3.org/14099
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn