title: kubernetes dashboard - how to view list of defined namespaces without the need to search a certain namespace manually
body: <p>When i do a RoleBinding to a certain user, 
  i wish this user could be able to access the k8s dashboard and already see the allowed namespaces i defined in the yaml.
  the issue is that, after a user access the dashboard, he needs to type manually the required namespace, pressing 'Enter', only then he sees its features!</p>
  
  <p>If for example i define namespaces A,B and C to user John, can you provide a yaml template that allows John to access and immediately see and select between namespaces A,b and C? 
  (currently, under the 'namespaces' field,  he needs to type 'A' end 'Enter' in order to view)</p>