slapos_cloud: can not predicate test on aggregate

Aggregate is not acquired from Supply to Cell

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/AllocationSupplyCell_asPredicate.py

@@ -6,7 +6,7 @@ if (supply.getPortalType() != 'Allocation Supply') or (supply.getValidationState
 if not context.isAllocable():
   return None
 
-base_category_tuple = ('resource', 'software_type', 'software_release', 'destination_project', 'aggregate')
+base_category_tuple = ('resource', 'software_type', 'software_release', 'destination_project')
 
 if supply.getDestination():
   base_category_tuple += ('destination',)