slapos_pdm: use edit_workflow on Variation portal types

master/bt5/slapos_pdm/PortalTypeWorkflowChainTemplateItem/workflow_chain_type.xml

@@ -3,6 +3,14 @@
   <type>Software Product</type>
   <workflow>-validation_workflow, commerce_validation_workflow</workflow>
  </chain>
+ <chain>
+  <type>Software Product Release Variation</type>
+  <workflow>edit_workflow</workflow>
+ </chain>
+ <chain>
+  <type>Software Product Type Variation</type>
+  <workflow>edit_workflow</workflow>
+ </chain>
  <chain>
   <type>Upgrade Decision</type>
   <workflow>edit_workflow, ticket_interaction_workflow, upgrade_decision_workflow, upgrade_slap_interface_workflow</workflow>

master/bt5/slapos_pdm/bt/template_portal_type_workflow_chain_list

+Software Product Release Variation | edit_workflow
+Software Product Type Variation | edit_workflow
 Software Product | -validation_workflow
 Software Product | commerce_validation_workflow
 Upgrade Decision | edit_workflow