feat: allow connection to redis using uri

[iwpnd]

closes: #1010

[coveralls]

Pull Request Test Coverage Report for Build 19f74247e-PR-1011

Details

• 10 of 12 (83.33%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 42.78%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
cache/redis/redis.go	10	12	83.33%

Totals
Change from base Build 0f3131fbe:	0.03%
Covered Lines:	7013
Relevant Lines:	16393

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💛 - Coveralls

[ARolek]

Looks good, and I agree that this it's the right move to deprecate the old config properties in favor of the connection string approach. A couple of requests:

• Please update the README for this package indicating that connection string is the favored approach.
• What do you think about upgrading the underlying go-redis package? looks like the one we have in go.mod is pretty old.

[iwpnd]

I would upgrade redis in a separate PR. v9 passes contexts to commands, so some changes are required there. Will otherwise address your comments momentarily. :)

[ARolek]

Looks good!