fix(#9508): switch to ioredis (#9545)

* switch to ioredis

also need this fix in redisearch:

redis-search.js:98
```
  redisClient.multi(cmds).exec(function(err, ids) {
    if (err) {
      return callback(err);
    }
    var errRes = ids[resultIndex];
    if (errRes[0]) {
      return callback(errRes[0]);
    }
    callback(null, errRes[1]);
  });
```

* dbsearch compatible with ioredis

* fixed dbsearch?

src/database/redis/sets.js

@@ -29,6 +29,9 @@ module.exports = function (module) {
 		if (!Array.isArray(key)) {
 			key = [key];
 		}
+		if (!value.length) {
+			return;
+		}
 
 		const batch = module.client.batch();
 		key.forEach(k => batch.srem(String(k), value));