Currently when running the foreman core tests with katello enabled, the UsergroupMemberTests fail with this:

undefined method `remote_id' for nil:NilClass (NoMethodError)
/var/lib/workspace/workspace/test_katello_core_gsutcliffe/database/postgresql/ruby/1.9.3/plugin/app/lib/actions/middleware/remote_action.rb:21:in `block in plan'
/var/lib/workspace/workspace/test_katello_core_gsutcliffe/database/postgresql/ruby/1.9.3/plugin/app/lib/actions/middleware/remote_action.rb:21:in `tap'
/var/lib/workspace/workspace/test_katello_core_gsutcliffe/database/postgresql/ruby/1.9.3/plugin/app/lib/actions/middleware/remote_action.rb:21:in `plan'
/usr/local/rvm/gems/ruby-1.9.3-p392@test_katello_core_gsutcliffe-3/gems/dynflow-0.7.2/lib/dynflow/middleware/stack.rb:22:in `call'
/usr/local/rvm/gems/ruby-1.9.3-p392@test_katello_core_gsutcliffe-3/gems/dynflow-0.7.2/lib/dynflow/middleware/stack.rb:26:in `pass'
/usr/local/rvm/gems/ruby-1.9.3-p392@test_katello_core_gsutcliffe-3/gems/dynflow-0.7.2/lib/dynflow/middleware.rb:16:in `pass'
/usr/local/rvm/gems/ruby-1.9.3-p392@test_katello_core_gsutcliffe-3/gems/dynflow-0.7.2/lib/dynflow/middleware.rb:29:in `plan'
/usr/local/rvm/gems/ruby-1.9.3-p392@test_katello_core_gsutcliffe-3/gems/dynflow-0.7.2/lib/dynflow/middleware/stack.rb:22:in `call'
/usr/local/rvm/gems/ruby-1.9.3-p392@test_katello_core_gsutcliffe-3/gems/dynflow-0.7.2/lib/dynflow/middleware/world.rb:30:in `execute'
...

It seems that changing the tests to use `users(:admin)` fixes the problem, and is a cleaner use of fixtures anyway.