slapos_pdm: Cancel Upgrade Decision if the SR is already running the proper version

master/bt5/slapos_pdm/SkinTemplateItem/portal_skins/slapos_pdm/UpgradeDecision_tryToCancel.py

@@ -8,9 +8,18 @@ if simulation_state in require_state_list:
   if not current_release:
     # This upgrade decision is not valid
     return False
+  instance_tree = upgrade_decision.UpgradeDecision_getInstanceTree()
+  if instance_tree is not None:
+    current_instance_tree_release = instance_tree.getUrlString()
+    if current_instance_tree_release == new_url_string:
+      if simulation_state in cancellable_state_list:
+        upgrade_decision.cancel()
+      return True
+
   if current_release.getUrlString() == new_url_string:
     # Cannot cancel because the software releases are the same
     return False
+
   if simulation_state in cancellable_state_list:
     upgrade_decision.cancel()
   return True