Auster Cid

Fix missing attributes in RedisCluster spans

4

# Description Modifies `_set_connection_attributes` to handle `conn` being an instance of `redis.cluster.RedisCluster`. Fixes [#2505](https://github.com/open-telemetry/opentelemetry-python-contrib/issues/2505) ## Type of change - [x] Bug fix (non-breaking change which fixes an issue) # How...