tests: Move redis under toxgen #3649

Job	Run time
Flags (pinned) (3.9, ubuntu-22.04)	1m 51s
Flags (pinned) (3.13, ubuntu-22.04)	3m 51s
Flags (pinned) (3.12, ubuntu-22.04)	3m 31s
Flags (pinned) (3.7, ubuntu-22.04)	1m 38s
Flags (pinned) (3.8, ubuntu-22.04)	2m 14s
All pinned Flags tests passed	3s
	13m 8s

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