There is no settings for connection timeout

```c
static redisContext *
redis_do_connect(struct redis_fdw_ctx *rctx)
{
	redisContext *ctx;
	redisReply *reply;
	struct timeval timeout = {1, 0};
```
[redis_fdw.c](/luxms/rw_redis_fdw/blob/master/redis_fdw.c#L2135)
