slapos_cloud: use new related key format

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/Person_findPartition.py

@@ -85,7 +85,7 @@ for base_category in compute_node_base_category_list:
     if category is None:
       query_kw["uid"] = "-1"
     else:
-      query_kw["%s_uid" % base_category] = category.getUid()
+      query_kw["%s__uid" % base_category] = category.getUid()
 
 extra_query_kw = context.ComputePartition_getCustomAllocationParameterDict(
       software_release_url, software_type, software_instance_portal_type,