Merge pull request #873 from manics/delete-named-pvc

Delete named PVCs if they contain `{user_server}`

kubespawner/spawner.py

@@ -3807,7 +3807,7 @@ async def delete_forever(self):
             self.log.info(f"Not deleting pvc for {log_name}: {self.pvc_name}")
             return
 
-        if self.name and '{servername}' not in self.pvc_name_template:
+        if self.name and '{user_server}' not in self.pvc_name_template:
             # named server has the same PVC as the default server
             # don't delete the default server's PVC!
             self.log.info(