slapos_cloud: add edit and validation workflow on computer node/partition

master/bt5/slapos_cloud/PortalTypeWorkflowChainTemplateItem/workflow_chain_type.xml

 <workflow_chain>
  <chain>
   <type>Compute Node</type>
-  <workflow>compute_node_slap_interface_workflow, slapos_cloud_interaction_workflow</workflow>
+  <workflow>computer_slap_interface_workflow, edit_workflow, slapos_cloud_interaction_workflow, validation_workflow</workflow>
  </chain>
  <chain>
   <type>Compute Partition</type>
-  <workflow>compute_partition_slap_interface_workflow</workflow>
+  <workflow>compute_partition_slap_interface_workflow, edit_workflow, validation_workflow</workflow>
  </chain>
  <chain>
   <type>Hosting Subscription</type>

master/bt5/slapos_cloud/bt/template_portal_type_workflow_chain_list

-Compute Partition | compute_partition_slap_interface_workflow
-Compute Node | compute_node_slap_interface_workflow
+Compute Node | computer_slap_interface_workflow
+Compute Node | edit_workflow
 Compute Node | slapos_cloud_interaction_workflow
+Compute Node | validation_workflow
+Compute Partition | compute_partition_slap_interface_workflow
+Compute Partition | edit_workflow
+Compute Partition | validation_workflow
 Hosting Subscription | edit_workflow
 Instance Tree | edit_workflow
 Instance Tree | instance_slap_interface_workflow