Handle missing `connection_kwargs` in `patch_redis_client` #2642

Job	Run time
gevent, python 2.7, ubuntu-20.04	2m 5s
gevent, python 3.6, ubuntu-20.04	3m 37s
gevent, python 3.7, ubuntu-20.04	2m 37s
gevent, python 3.8, ubuntu-20.04	2m 41s
gevent, python 3.9, ubuntu-20.04	3m 26s
gevent, python 3.10, ubuntu-20.04	2m 51s
gevent, python 3.11, ubuntu-20.04	3m 57s
All gevent tests passed or skipped	1s
	21m 15s

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