The fabric8-arquillian extensions attempts to create a new kubernetes namespace for each invocation.
It is generally never allowed for ordinary users on OpenShift to create namespaces directly ( see https://docs.openshift.com/enterprise/3.1/architecture/core_concepts/projects_and_users.html#namespaces )
It is however common to let users create their own projects (which will generate a new namespace managed by openshift).
Fabric8-arquillian should therefore create new projects instead of namespaces to be usable also for users who are not cluster admins on OpenShift.
Also it would be nice to have an option to specify a static project for those cases where user is not even allowed to create their own projects.