UnixDomainSocketConnection missing constructor argument (#2630)

Author: woutdenolf

redis/connection.py

@@ -1155,8 +1155,9 @@ def _connect(self):
 class UnixDomainSocketConnection(AbstractConnection):
     "Manages UDS communication to and from a Redis server"
 
-    def __init__(self, path="", **kwargs):
+    def __init__(self, path="", socket_timeout=None, **kwargs):
         self.path = path
+        self.socket_timeout = socket_timeout
         super().__init__(**kwargs)
 
     def repr_pieces(self):