fix socket.error raises

CHANGES/1129.bugfix

@@ -0,0 +1 @@
+fixed raw socket.error(or one of its subclasses) raises instead of a redis.exceptions.ConnectionError

aioredis/connection.py

@@ -858,6 +858,11 @@ async def read_response(self):
         except asyncio.TimeoutError:
             await self.disconnect()
             raise TimeoutError(f"Timeout reading from {self.host}:{self.port}")
+        except OSError as e:
+            await self.disconnect()
+            raise ConnectionError(
+                f"Error while reading from {self.host}:{self.port} : {e.args}"
+            )
         except BaseException:
             await self.disconnect()
             raise