slapos_json_rpc_api: use jIOWebSection_getObjectFromData

master/bt5/slapos_json_rpc_api/SkinTemplateItem/portal_skins/slapos_jio_api/jIOWebSection_requestSoftwareInstance.py

@@ -20,12 +20,10 @@ kw = dict(software_release=data_dict.get("software_release_uri"),
           state=data_dict.get("state", "started"),
           project_reference=data_dict.get("project_reference", None))
 
+
 if compute_node_id and compute_partition_id:
-  compute_partition = portal.portal_catalog.getComputePartitionObject(
-    compute_node_id,
-    compute_partition_id,
-  )
-  requester = compute_partition.getSoftwareInstance()
+
+  requester = context.jIOWebSection_getObjectFromData(data_dict)
   instance_tree = requester.getSpecialiseValue()
 
   if instance_tree is not None: