Rewrite parent_scan_interval default value

Author: AlexxIT

custom_components/xiaomi_gateway3/core/gateway3.py

@@ -358,8 +358,7 @@ def __init__(self, host: str, token: str, config: dict, **options):
 
         self._ble = options.get('ble', True)  # for fast access
         self._debug = options.get('debug', '')  # for fast access
-        self.parent_scan_interval = (-1 if options.get('parent') is None
-                                     else options['parent'])
+        self.parent_scan_interval = options.get('parent', -1)
         self.default_devices = config['devices'] if config else None
 
         self.telnet_cmd = options.get('telnet_cmd') or TELNET_CMD