slapos_subscription_request: Use audit validation workflow rather validation workflow

   This introduce specific worklists

master/bt5/slapos_subscription_request/PortalTypeWorkflowChainTemplateItem/workflow_chain_type.xml

@@ -9,7 +9,7 @@
  </chain>
  <chain>
   <type>Subscription Request</type>
-  <workflow>edit_workflow, subscription_request_workflow, validation_workflow</workflow>
+  <workflow>audit_validation_workflow, edit_workflow, subscription_request_workflow</workflow>
  </chain>
  <chain>
   <type>Trial Condition</type>

master/bt5/slapos_subscription_request/bt/template_portal_type_workflow_chain_list

 Email | -coordinate_interaction_workflow
 Subscription Condition | commerce_validation_workflow
 Subscription Condition | edit_workflow
+Subscription Request | audit_validation_workflow
 Subscription Request | edit_workflow
 Subscription Request | subscription_request_workflow
-Subscription Request | validation_workflow
 Trial Condition | commerce_validation_workflow
 Trial Condition | edit_workflow
 Trial Request | edit_workflow