slapos_erp5: Minor change

   Limit role definition for whenever destination decision is a person, follow up the role over Subscription Request, to be future-proof whenever doing Organisation accounting.

master/bt5/slapos_erp5/PortalTypeRolesTemplateItem/Regularisation%20Request.xml

 <type_roles>
   <role id='Auditor'>
    <property id='title'>Customer</property>
-   <property id='description'>Monovalued role</property>
+   <property id='condition'>python: context.getDestinationDecision('', portal_type='Person') != ""</property>
    <property id='base_category_script'>ERP5Type_getSecurityCategoryFromContent</property>
    <multi_property id='categories'>local_role_group/user</multi_property>
    <multi_property id='base_category'>destination_decision</multi_property>