Avoid template document migration.

master/bt5/slapos_upgrader/ExtensionTemplateItem/SlapOSUpgrader.py

 from Products.ERP5Type.Base import WorkflowMethod
 
 def Instance_migrateUrlString(self):
+  BLACKLIST_RELATIVE_URL_LIST = (
+    'software_instance_module/template_slave_instance',
+    'software_instance_module/template_software_instance',
+    'hosting_subscription_module/template_hosting_subscription',
+  )
   @WorkflowMethod.disable
   def real(self):
+    if self.getRelativeUrl() in BLACKLIST_RELATIVE_URL_LIST:
+      return
     property_id = 'root_software_release_url'
     if self.getPortalType() not in ('Hosting Subscription', 'Software Instance', 'Slave Instance'):
       raise TypeError(self.getPortalType())

master/bt5/slapos_upgrader/bt/revision

-8
\ No newline at end of file
+9
\ No newline at end of file