slapos_upgrader: try to reduce conflict

master/bt5/slapos_upgrader/SkinTemplateItem/portal_skins/slapos_upgrader/Base_triggerFullSiteMigrationToVirtualMasterStep3.py

@@ -37,6 +37,10 @@ portal.portal_catalog.searchAndActivate(
   method_kw={'tag': tag},
   activate_kw={'tag': tag, 'priority': 1},
 
+  # Go slowly, because it generate DB conflicts
+  packet_size=1,
+  activity_count=1,
+
   portal_type="Instance Tree",
 
   **migrated_select_dict

master/bt5/slapos_upgrader/SkinTemplateItem/portal_skins/slapos_upgrader/Project_checkSiteMigrationCreateRemoteNode.py

@@ -56,6 +56,14 @@ if remote_node is None:
 
 
 # XXX Then, migrate other documents linked to the virtual master
-for relative_url_to_migrate in relative_url_to_migrate_list:
-  object_to_migrate = portal.restrictedTraverse(relative_url_to_migrate)
-  object_to_migrate.activate(**activate_kw).Instance_activateMigrationToRemoteProject(remote_node.getRelativeUrl())
+portal.portal_catalog.searchAndActivate(
+  method_id='Instance_activateMigrationToRemoteProject',
+  method_args=[remote_node.getRelativeUrl()],
+  activate_kw=activate_kw,
+
+  # Go slowly, because it generate DB conflicts
+  packet_size=1,
+  activity_count=1,
+
+  relative_url=relative_url_to_migrate_list,
+)