StrictRedisCluster was renamed

[aboganas]

Class StrictRedisCluster was renamed to RedisCluster. All usages of this class must be updated.

[daedamee]

It's Right. in redis 3.5.0, we have to use RedisCluster instead of StrictRedisCluster.
I modifid this and solved import error issues.
please pull this request.

[hugoprudente]

Hi is there any update on this PR?

@daedamee thanks for the update! I'm running it locally here to solve my issue.

[hugoprudente]

I have tested more the PR made by @daedamee, and as I use password redis, I got to a new issue.

Due to the change from StrictRedisCluster to RedisCluster and preservation of password=None on the __init__ it causes the value used by the CACHE_OPTIONS that is carried by the kargs to be lost.

Old

            self._client = StrictRedisCluster(host=host,
                                              port=port,
                                              password=password,
                                              **kwargs)

New

            self._client = RedisCluster(startup_nodes=startup_nodes,
                                              **kwargs)

init

    def __init__(self, host='localhost', port=6379, password=None,
                 default_timeout=300, key_prefix=None,startup_nodes=[{"host": "127.0.0.1", "port": "6379"}], **kwargs):

log

Traceback (most recent call last):
  File "/home/ubuntu/.local/lib/python3.6/site-packages/rediscluster/nodemanager.py", line 161, in initialize
    cluster_slots = r.execute_command("cluster", "slots")
  File "/home/ubuntu/.local/lib/python3.6/site-packages/redis/client.py", line 756, in execute_command
    return self.parse_response(connection, command_name, **options)
  File "/home/ubuntu/.local/lib/python3.6/site-packages/redis/client.py", line 769, in parse_response
    response = connection.read_response()
  File "/home/ubuntu/.local/lib/python3.6/site-packages/redis/connection.py", line 638, in read_response
    raise response
redis.exceptions.ResponseError: NOAUTH Authentication required.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "serve.py", line 11, in <module>
    app = create_app()
  File "/home/ubuntu/environment/CaptureTheFlagService/CTFd/__init__.py", line 212, in create_app
    cache.init_app(app)
  File "/home/ubuntu/.local/lib/python3.6/site-packages/flask_caching/__init__.py", line 198, in init_app
    self._set_cache(app, config)
  File "/home/ubuntu/.local/lib/python3.6/site-packages/flask_caching/__init__.py", line 224, in _set_cache
    cache_options)
  File "/home/ubuntu/.local/lib/python3.6/site-packages/flask_cache_redis_cluster/__init__.py", line 21, in rediscluster
    return RedisClusterCache(*args, **kwargs)
  File "/home/ubuntu/.local/lib/python3.6/site-packages/flask_cache_redis_cluster/__init__.py", line 50, in __init__
    **kwargs)
  File "/home/ubuntu/.local/lib/python3.6/site-packages/rediscluster/client.py", line 216, in __init__
    **kwargs
  File "/home/ubuntu/.local/lib/python3.6/site-packages/rediscluster/connection.py", line 146, in __init__
    self.nodes.initialize()
  File "/home/ubuntu/.local/lib/python3.6/site-packages/rediscluster/nodemanager.py", line 171, in initialize
    raise RedisClusterException("ERROR sending 'cluster slots' command to redis server: {0}".format(node))

---

As quick fix I have cleaned the init to match to the new RedisCluster method, is there any good recommendation, or ideas?