Fix incorrect disabling of Assign Nodes link
Fix incorrect disabling of Assign Nodes link

The Assign Nodes link should only be disabled if there are no nodes
available to assign *or unassign* for a particular role.

Change-Id: I60de7f30cf28e06484be452d3f96bc7101f1ac72
Closes-bug: #1595946

knowncitizen/tripleo-ui,knowncitizen/tripleo-ui,knowncitizen/tripleo-ui,knowncitizen/tripleo-ui