add controller_backupdb api method

Author: rp-

linstor/linstorapi.py

@@ -2699,6 +2699,20 @@ def controller_del_prop(self, key):
             body
         )
 
+    def controller_backupdb(self, backup_name):
+        """
+        Backup controller database with the given backup_name.
+
+        :param str backup_name: Name the backup should have.
+        :return: A list containing ApiCallResponses from the controller.
+        :rtype: list[ApiCallResponse]
+        """
+        self._require_version("1.13.0", msg="Backup DB is not support by controller version")
+        body = {
+            "backup_name": backup_name
+        }
+        return self._rest_request("BackupDb", "POST", "/v1/controller/backup/db", body)
+
     def controller_info(self):
         """
         If connected this method returns the controller info string.