TypeError when running ssl example from documentation

[boris-garvis]

Version: What redis-py and what redis version is the issue happening on?
5.0.4
Platform: What platform / version? (For example Python 3.5.1 on Windows 7 / Ubuntu 15.10 / Azure)
Ubuntu 20.04, python 3.8
Description: Description of your issue, stack traces from errors and code that reproduces the issue
When running example of ssl connection using url TypeError is thrown TypeError: __init__() got an unexpected keyword argument 'ssl_cert_reqs'

Link to documentation https://redis-py.readthedocs.io/en/stable/examples/ssl_connection_examples.html#Connecting-to-a-Redis-instance-via-a-URL-string

In [5]: redis.__version__
Out[5]: '5.0.4'

In [6]: url_connection = redis.from_url("redis://localhost:6379?ssl_cert_reqs=none&decode_responses=True&health_check_interval=2")
   ...: url_connection.ping()
---------------------------------------------------------------------------
IndexError                                Traceback (most recent call last)
~/anaconda3/lib/python3.8/site-packages/redis/connection.py in get_connection(self, command_name, *keys, **options)
   1101             try:
-> 1102                 connection = self._available_connections.pop()
   1103             except IndexError:

IndexError: pop from empty list

During handling of the above exception, another exception occurred:

TypeError                                 Traceback (most recent call last)
<ipython-input-6-ca21524ef001> in <module>
      1 url_connection = redis.from_url("redis://localhost:6379?ssl_cert_reqs=none&decode_responses=True&health_check_interval=2")
----> 2 url_connection.ping()

~/anaconda3/lib/python3.8/site-packages/redis/commands/core.py in ping(self, **kwargs)
   1215         For more information see https://redis.io/commands/ping
   1216         """
-> 1217         return self.execute_command("PING", **kwargs)
   1218 
   1219     def quit(self, **kwargs) -> ResponseT:

~/anaconda3/lib/python3.8/site-packages/redis/client.py in execute_command(self, *args, **options)
    540         pool = self.connection_pool
    541         command_name = args[0]
--> 542         conn = self.connection or pool.get_connection(command_name, **options)
    543 
    544         try:

~/anaconda3/lib/python3.8/site-packages/redis/connection.py in get_connection(self, command_name, *keys, **options)
   1102                 connection = self._available_connections.pop()
   1103             except IndexError:
-> 1104                 connection = self.make_connection()
   1105             self._in_use_connections.add(connection)
   1106 

~/anaconda3/lib/python3.8/site-packages/redis/connection.py in make_connection(self)
   1142             raise ConnectionError("Too many connections")
   1143         self._created_connections += 1
-> 1144         return self.connection_class(**self.connection_kwargs)
   1145 
   1146     def release(self, connection: "Connection") -> None:

~/anaconda3/lib/python3.8/site-packages/redis/connection.py in __init__(self, host, port, socket_keepalive, socket_keepalive_options, socket_type, **kwargs)
    591         self.socket_keepalive_options = socket_keepalive_options or {}
    592         self.socket_type = socket_type
--> 593         super().__init__(**kwargs)
    594 
    595     def repr_pieces(self):

TypeError: __init__() got an unexpected keyword argument 'ssl_cert_reqs'

[gerzse]

@boris-garvis Thanks for reporting this. Not only the documentation was off, also the test certificates had some issues.