slapos_panel: fixup portal_status_message propagation

master/bt5/slapos_panel/SkinTemplateItem/portal_skins/slapos_panel/ComputeNode_selectSupplySoftwareRelease.py

@@ -10,5 +10,6 @@ compute_node.requestSoftwareRelease(
 
 software_installation = portal.restrictedTraverse(context.REQUEST.get('software_installation_url'))
 return software_installation.Base_redirect(
-  message=translateString('New Software Installation created.')
-)
+  keep_items={
+    'portal_status_message': translateString('New Software Installation created.')
+  })

master/bt5/slapos_panel/SkinTemplateItem/portal_skins/slapos_panel/SoftwareProduct_addSlapOSSoftwareRelease.py

@@ -23,5 +23,6 @@ except UnsupportedWorkflowMethod:
   software_release.submit()
 
 return software_release.Base_redirect(
-  message=translateString('New Software Release created.')
-)
+  keep_items={
+    'portal_status_message': translateString('New Software Release created.')
+  })