Fix the tests and give Space admins permission to change 'Team permissions' by default.

Running the tests with drush works for me:

drush test-run 'Open Atrium Access'

There are loads of exceptions and notices, but all the tests appear to pass:

Open Atrium Access (default "All" permissions) 24 passes, 0 fails, 7 exceptions, and 4 debug messages
Open Atrium Access 201 passes, 0 fails, 40 exceptions, and 16 debug messages