slapos_erp5: drop allocation_scope/open categories

master/bt5/slapos_erp5/WorkflowTemplateItem/portal_workflow/slapos_erp5_interaction_workflow/script_ComputeNode_updateAllocation.py

 compute_node = state_object["object"]
 allocation_scope = compute_node.getAllocationScope()
 
-if allocation_scope in ['open/public', 'open/subscription']:
+if allocation_scope.startsWith('open'):
+  # ensure sub allocation scope are not used anymore
+  assert allocation_scope == 'open', allocation_scope
   # Public compute_node capacity is handle by an alarm
   capacity_scope = 'close'
   monitor_scope = 'enabled'
-elif allocation_scope == 'open/friend':
-  # Capacity is not handled for 'private' compute_nodes
-  capacity_scope = 'open'
-  monitor_scope = 'enabled'
 else:
   monitor_scope = 'disabled'
   capacity_scope = 'close'