slapos_crm: Check if Slaved instance is left over

   If a software instance with 1 or more slave instances allocated on it is destroyed the instances aren't reallocated, so let's create a ticket to high light the problem.

master/bt5/slapos_crm/SkinTemplateItem/portal_skins/slapos_crm_monitoring/SoftwareInstance_getReportedErrorDict.py

@@ -38,6 +38,16 @@ if compute_node.getPortalType() == "Compute Node" and \
   error_dict['ticket_description'] = error_dict['message']
   return error_dict
 
+if context.getPortalType() == 'Slave Instance' and compute_node.getPortalType() == "Compute Node":
+  software_instance = compute_partition.getAggregateRelatedValue(portal_type='Software Instance')
+  if software_instance is None:
+    # Slave instance is allocated but the software instance was already destroyed
+    error_dict['notification_message_reference'] = 'slapos-crm-instance-tree-slave-on-destroyed-instance.notification'
+  error_dict = updateErrorDictWithError(error_dict)
+  error_dict['message'] = "%s is allocated on a destroyed software instance (already removed)." % context.getTitle()
+  error_dict['ticket_description'] = error_dict['message']
+  return error_dict
+
 # Skip to check if monitor disabled on the compute node.
 # Remote node has no state.
 if (compute_node.getPortalType() == "Compute Node") and (compute_node.getMonitorScope() != "enabled"):